Abby's Lab.

Abby spins around on her chair. "Come on you guys it'll be fun." The others stare at her the doubt plainly written on their faces.
"I don't know Abby this is serious" Ziva states solemnly.
"I'm sure I can get the guy to do it. I think he has a crush on me."
"A crush?" "You have a problem with that Timmy?" He cowers away from her glare.
"No. No problem with that at all."
"So you and Ziva need to make sure we're not disturbed while we're doing it. Then Tony makes sure everyone knows we've done it and of course provides a distraction at the crucial time."
"You know Abby as Senior Field Agent I really think this might be too dangerous."
"Nothing bad is going to happen."
"But what if it does?" McGee questions nervously.
"I'll take the consequences then. So who's in?" Abby slams her hand on the desk.
"What's life without a little risk?" Ziva places her hand atop Abby's.
"You'll need me for the distraction phase" adds Tony placing his hand atop Ziva's.
"I don't know guys. What if...." "Probie!" "Oh O.K." McGee places his hand atop Tony's.
"Now listen up men" Abby glances at Ziva. "Now listen up team. You know your jobs. Don't let me down." Smiling the agents return to work.

NCIS - The next day.

Tony finds Gibbs at the vending machine punching in the numbers for his morning coffee. "Hey Boss I need you to sign this before I send it up to the Director."
"This couldn't wait until I was back upstairs?" he asks glancing over the folders contents.
"The Director wanted to look at the revisions before the meeting. I think the time got changed."
Gibbs holds the folder against the wall and signs. He hands to folder to Tony in exchange for cup DiNozzo has removed from the machine. "Thanks Boss."

As they walk into the squad room Gibbs is puzzled to see Jimmy and Abby talking with Tim and Ziva by her desk. It was most unusual for the two them to be upstairs this early in the day unless there was a case on. He doesn't notice the team turning to look at him as he raises his cup and takes a long swig. Gibbs promptly removes the top of the cup and spits the mouthful back in.
"What the hell?" He observes the team watching him and glares. "What was that?"
Abby smiles sweetly. "Did someone do something to you coffee Gibbs?"
He continues to glare. "Happy April Fools Day Bossman."
"Someone must have adjusted the buttons on the vending machine. I think that swill was tea. Abs was it you?"
"No. I haven't had time. McGee came over last night to help me upgrade my system, then we played some games almost all night so I overslept and then my hearse wouldn't start so I barely made it to work on time this morning and...."
"Abs!" There is a long pause.
"I can't lie to you Gibbs. Yes, I confess it was me who got the guy to reset the buttons. What's my punishment going to be?" she grins wickedly. The team holds their breath waiting for Gibbs' verdict on Abby's prank. To their collective astonishment he laughs heartily.
"What don't you think I have a sense of humor?" They stare at him.
"I'm going for a replacement. Now get back to work." "Yes Boss."
As he passes Abby he asks "Can I get you a Caf-Pow?"
"Yes please" she responds eagerly not suspecting what he has in mind.

Rule 23 - Never mess with a marines coffee if you want to live. Marine in Forced Entry
and
Rule 7 - Always be specific when you lie. Reveille.

Author's Note - I was planning on sticking to rules spoken by or to Gibbs but Rule 23 just had too much story potential to ignore!