Author's note: This is a fun chapter, but there's a lot of dirty talk, so no kids allowed.

"I can't believe you're doing this to me again!" the young Water Tribe warrior pouted.

"Oh, quit your whining, Sokka!" his sister, Katara, dressed him down. "Would you rather I do with this Aang? Besides, you're hardly suffering! And it's not like you have to put it in your mouth! Now quit squirming around! This is difficult enough as it is!"

Chapter 3: Blow Me Down

Pursued relentlessly by a secret society of women who sought to use Katara's newly discovered knowledge of mouthbending to gain power over men and redress ancient wrongs, the waterbending lass felt she had no choice except to give her antagonists what they wanted, no matter how distasteful the deed.

Looking up from her labors, Katara noticed something.

"Huh. Looks smaller."

Seeking to restore his pride (if not his dignity), Sokka quietlly, and discreetly, moved his right hand under the base of his cock, and squeezed. The blood vessels supplying his male member thus constricted, the rate of blood flow increased, making his dick grow once more to a respectable size (much like pinching a garden hose magnifies the spray).

Returning her gaze to Sokka's unit, Katara noted the change. "Mm. Okay. That's better."

"Need any help in there?" the voice dripping with ulterior motives called from outside the bedroom. It was their blind, earthbending companion, Toph Bei Fong.

"No!" Sokka and Katara yelled in unison.

A short while later, having finally, and happily, completed their secretive affair, Katara opened the bedroom door to allow Toph to join her and Sokka.

"Wow! That's just excellent!" the earthbender congratulated the brother/sister pair. "Seriously, I didn't thnk you guys could pull it off!"

"Oh, she pulled it off, all right!" Sokka moaned. "And stared, and used her hands to..."

"Sokka, please!" Katara berated her brother's poor attitude. "Honestly! You act like I've never seen your penis before! Remember when you got your upper thigh stuck on the tusks of that arctic walrus tiger you hunted, and I had to very carefully cut your breeches off of you to treat your wound?"

"Yeah yeah yeah! But this is different!"

"Really? What we're doing is no big deal! People do this type of thing all the time!"

"I don't care if there are places where this gets shoved in your face!" Sokka vented. "But do brothers and sisters do it 'all the time'?" the buff teen warrior challenged his sibling. "I doubt it!"

"Maybe." Katara spat back. "If they really care about each other!"

"It even leans a bit to the left, just like..." the Earth Kingdom girl said as she approached the phallus of her dreams.

"Don't touch it, Toph!" Katara yelled.

"Yeah! What's the matter with you?" Sokka cried.

"Oh, so Katara can touch it, but I can't? Thanks a lot!" Toph bitched.

"Okay, practice time is over! Put it in your pants, Sokka. We'll need it ready to go in a while." Katara instructed her partner in crime.

"You're the boss!" Sokka huffed. He plopped the massive cock in his trousers, pulled his pants up, and adjusted himself.

"Now let's get ready for our 'guests'!" Katara announced.

Later, in the living room with the big picture window...

"Sokka?" Katara coyly stated. "Toph's finally gone."

The horny teen girl lowered herself on her brother's welcoming lap, and snuggled with him in the aptly named 'loveseat'.

"You mean?" the aroused boy with a million thoughts and ideas (most of them dirty) running through his head said.

"Yes...I can't stand it anymore! Let's do it again!"

From the apartment across the way, a gender warrior and her youthful apprentice observed the more than coosome twosome.

"See? Whut did ah tell yew? Hormones and curiosity do it ev'ry time! Although certain herbs do help! Remember everythin' yew see, Meng!" the older woman instructed her young charge, who used a telescoping eyepiece to get a better view of the oral action.

It wasn't like the first time, Katara told herself as she gently eased down her brother's underpants, slowly revealing the turgid piece of mancandy she had worked so feverishly upon just a short while ago.

Yet, how could it be the same? She's learned so much since then.

Plus, this time Katara was keeping her eyes wide open, drinking the wild events in with her big blue peepers.

As she drew her fourteen year old lips over the tip of the meaty member, Katara marveled at the taste. She hadn't really paid much attention to the flavor the first time, as she was so disgusted with herself.

Katara had to admit...Not bad. Not bad at all!

Pistoning the rigid tool in and out of her mouth, the Water Tribe girl's greatest fear was that she would damage the fleshy appendage.

Katara alternated deep, gag-free strokes of the thick organ down her young throat with long, langourous licks of her lapping tongue up and down the shaft of the veiny tube steak, the better to show off her 'oral chops'.

The balls were a new addition. Tied up as she was, Katara hadn't been able to do anything with them the other day when she sucked Sokka's cock. So Katara made sure she playfully massaged them now with her hand while she throatfucked the choice manmeat.

Sokka moaned throughout his little sister's expert oral and manual ministrations, but not the good kind of moan! The big baby acted like he didn't like it, although she could tell he really did! Hypocrite.

But Katara couldn't let that distract her from the job at hand.

So she resumed her cock-sucking antics.

Meng looked on in rapt attention, absorbing every detail of Katara's knob-gobbling technique.

Finally, Sokka's body stiffened, then relaxed, and warm fluids from the pulsating penis flooded the waterbender's mouth!

Katara bent the gooey liquid from her throat, then smiled at her sibling and said "So? How was I?"

"You, you were great, Katara!" the flushed Water Tribe boy sputtered.

Craning her head upwards, Katara met her brother's lips with hers.

"Let's hope." she said, right before they kissed.

"So, Meng? Did yew get it all?" Boni Su asked.

"Yes, Ma'am!"

"Good! Then demonstrate on Ichiro!" Boni added, indicating a young man in an Earth Army uniform who immediately doffed his trousers.

"Eep! Look at the size of him! But he does have big ears! O-kay! Here I go!" Meng bravely declared.

"Mmm." Sokka uttered, licking his lips after Katara broke off their 'kiss'. "That tastes pretty good!"

"It should be! After all, I did use your favorite meat to make the fake cock we put in your pants!" Katara revealed.

"So...do you think they bought it?" Sokka wondered as the unlikely pair walked over to the dining room to continue their conversation (out of sight of Boni & Meng).

"Thaht's it, Meng! Mouth 'em jus' lahk Katara! And describe th' bendin' fer me!" the conniving Boni Su said.

"Mm knda bzzee!" she gasped as the soldier's suck-sword filled her throat cavity.

"Spirits! Now she's rubbing it against that tooth of hers!" the 'lucky' man yelped.

"Yeah, I think they bought it! Definitely!" Katara replied. "You're not the only one who can come up with great plans, brother! Now their 'mouthbending' will be all wrong, so Boni Su will never be able to carry out her misguided war!"

"I was with Toph on this one. I didn't think you could pull it off!" Sokka commented. "Err, not my pants. I mean the whole fake dicksucking thing. Have to admit, it was a little weird seeing you so, uh, enthusiastic."

"Well, I had to put on a good show, right?" Katara said, shyly averting her batting eyelids. Then she regained her composure and said "Ahem. I know this hasn't been easy for you, Sokka. Especially posing nude for me, your own sister, so I could make a replica of your penis good enough to fool Boni and Meng! Sorry about that. But I'd do anything...to protect the people I love."

"Yeah, you would. You...you really have grown into a wonderful young woman, Katara! I'm so proud of you!"

The love practically pouring out of them, the two sibs from the South Pole wrapped their arms around each other and hugged.

"So...what are you we going to do with this?" Sokka said, holding up his meat substitute, the phony cock Katara sculpted based on her observations of his real one. Not only was it made of meat, the inside was hollow, and contained a sack of clear gravy and water.

"Don't worry! I'll get rid of it!" Katara promised, plucking the the sculpted salami out of her brother's grasp.

"Good! The last thing I want is for Toph to get her hands on it! Spirits only know what she'd do with the thing! She's really been freaking me out lately with some of her jokes!"

"Believe me, I know exactly what to do with this!" Katara beamed as she proudly handled the faux fellatio object. "And rest assured, Toph has nothing to do with it!"

"O...kay?" a confused Sokka muttered, eyeing his sister warily.

"Sokka!" Katara let out a small, embarrassed laugh. "I was thinking of adding it to tomorrow night's stew, o brother of mine with the dirty mind!"

"Oh. Right. Sorry."

"Thanks for all your help, Sokka! I couldn't have done this without you!" Katara said, giving her big bro another hug.

"Come on, you're my sister! So I have to support you, no matter how wacky the scam!"

"Yeah, well, thanks anyway, brother. You went above and beyond."

Katara leaned over and gave Sokka a sisterly peck on the cheek.

"You're welcome, sis." he responded. Then he shifted in his seat and crossed his legs.

"Sokka!" Katara giggled. "Are you getting a boner?"

"No!" the rather ordinary (as in horny) teen boy denied.

"I could always give you a cold shower!" she joked.

"No thanks! Excuse me, I have to go pee!" the beet-red Sokka said as he placed his hands on the front of his pants and rushed as fast as he could to the bathroom, where he quickly relieved himself.

No, not that way!

(Or maybe it was that way. Depends what you're thinking of).

Katara merely smiled.

Next:

You weren't expecting that, were you?

And you won't expect what happens in the next chapter, either!

Someone's getting married!

No, really!

Actually, someones!

More than one of our storied cast is getting married!

But married to each other, or...someone else?

(Hint: They're not marrying Aang or Suki!)

Plus:

More machinations of the Dai Li, the smugglers and Boni Su!

What will our heroes do, what can they do, to stop them?

Notes

In mouthbending, the cocksucking motions of the mouth become the waterbending forms that move the liquids in the body (blood, water, semen), which affects the chi energy in the body and also stimulates the nerve endings, which is why the orgasms are so intense.

So mouthbending is a combination of cocksucking by mouth only (no hands), plus waterbending the liquids in the body, which affects the chi energy and stimulates nerve clusters.

Traditional mouthbending doesn't use hands to stroke the penis because the original mouthbenders didn't, although more advanced mouthbenders learned to use their hands in conjunction with their mouth to create more and varied reactions in the male body.

Mouthbending isn't just drawing the semen out of the body, through the penis; that wouldn't cause an orgasm. It's about affecting the body, making the blood flow into the penis and also stimulating the nerves that cause orgasm (just as water healing stimulates the body to heal itself faster).