by giganigashliga May 7, 2025

The fin created on one side of your hair/head when you vomit (boot) from drinking too much and then sleep in a pool of it. The fin formation is the result of it drying and creating the ultimate hair spiker.
Man, look at Tim—he's going to have a boot fin in the morning.
Is that hair mousse or a boot fin?
Yesterday I woke up with a boot fin and couldn't remember how I got it.
Is that hair mousse or a boot fin?
Yesterday I woke up with a boot fin and couldn't remember how I got it.
by dragon fan July 6, 2006

by strawberryblondefr March 14, 2024

A girl that had to wear glove things as a baby so they didn't scratch their face. Or maybe you're just an idiot and act like a fish 24/7.
by Mdjskdncidjs January 1, 2017

Snuggle Partner #1 "Is that shark in our bed?!"
Snuggle Partner #2 "No, it's just a blanket fin."
Snuggle Partner #1 "Wheww! Close one..."
Snuggle Partner #2 "No, it's just a blanket fin."
Snuggle Partner #1 "Wheww! Close one..."
by lil-nugget February 5, 2013

by hey i’m cool July 4, 2021
