User blog:Gravityfallsfan2/Gravity falls fan-made episode 12

This is called "The 2 mermaids".

Transcript
(at the mystery shack mabel,raven, and dipper are talking in the gift shop)

Mabel: Dipper, i still feel bad that you got beat-up for us.

Dipper: It's worth for my girls.

Raven: I thought it was sweet.

(dipper blushes)

Mabel: Dipper, are you blushing?

Dipper: N-n-no.

Mabel: Yeah yeah.

(wendy comes in)

Wendy: Hey guys.

Dipper,raven,mabel: Hey wendy.

Wendy: Hey guys i'm going to go swimming tomorrow at the lake do you want to come with me?

Mabel,dipper: Sure.

Raven: Um no i don't want to.

Mabel: Why?

Raven: Because i have to think of ways to defeat robbie.

(she runs outside)

Wendy: What was that about?

Dipper: Who knows.

(the scene cuts to raven swimming in the lake by the mystery shack)

(she has a tail and a scaly bra)

Raven: I know they will find out someday that i'm a mermaid and that mabel is one to.