Disclaimer: I don't own Gravity Falls and it's characters; only Disney and it's respective owners do, so Enjoy! - Princess Vanellope
Mabel: Don't worry Dipper, I'm dressed as Maru from Keroro The Deep Sea Princess movie at your Underwater Wedding, Right?
Dipper:(Dressed as Meru) Ugh!
Mermando:(Dressed as Princess Natsumi) (Hispanic Accent) Well, here it goes.
("Here's comes the bride" song playing")
Sebastian: (Jamaican Accent): Do you, Dipper, take Mermando to be your lawfully wedded fish?
Dipper: (surprised) Uhh, wait wah-you mean, we're supposed to-
Sebastian: Ahh-bah-bahb. Do you, Mermando, take Dipper to be your lawfully wedded human, for as long as you shall splish-splash through the sea?
Mermando: To be honest, I dunno; it's so very sudden, an-
Sebastian: Well, too late! By the power vested in me by the kingdom of Atlantica, I now pronounce you man and fish. (Both "bride" and "groom" are left staggered). You may now kiss the fish.
{Mermando and Dipper share an unsavory kiss}
(Ponyo's sisters, Marina and Stormy from Jake and the Neverland Pirates as bridesmaids): OH YUCK! BLERRCCGGHH! (puking, all while they snap photo after shocking photo).
After The Fishy Wedding, all the bridesmaids ran off, seemingly ill.
Mabel: Wait! What about lunch? Aw man.
Dipper: I'm sorry, Mabel, but Mermando and me, well, we really just can't expect ourselves to make this work. We're bailing on the reception and both decided to get a divorce.
Mabel (sadly): Bu-But why Dipper? Why would you guy wanna go off and do that, especially right after you got married?
Dipper: I mean, c'mon, sis. We were never that close; we're too young to get married; we live in different countries; and we're not even in the same species!
Mabel: Alriiight *sigh* okay, okay; I understand. Well, on the bright side, I premade this wedding album for you guys! {includes a polaroid of the two lip-locked}
Dipper: Awww, maaaan! I'm never gonna live this down!
{Meanwhile in the Gulf of Mexico, Mermando-still in Princess Natsumi's dress (without the pink shell veil.)-tries to catch up to his dolphin friends but, they seem to be "chirp-laughing" at him.}
Mermando: You meanies! Why are you laughing at me?
Mermando's Dolphin Friends: (Chirping Translation): Just look at yourself, Mermando, along with your Wedding album too, Look!
Mermando (as his friends play "hot-potato" with his wedding album): Ahhh! How on Earth did you guys get a copy of that?
Dolphin Friends: Some lady dumped a bunch in the tide this morning, so everyone got one! The ceremony was even on the aquatic access channel!
{Mermando faints}
The End
Conclusion: Okay, Y"all Mermando fans, that's a wrap. I've used Ponyo's sisters from Ponyo and Marina and Stormy from Jake and The Neverland Pirates, and This story was of course inspired by "The Deep End" Gravity Falls episode where Dipper saves Mermando from Air Drowning by forced kissing through "Fish CPR", and be sure to stick around for more of my fanfics, Buh-bye!
- Princess Vanellope