mess up 

To ruin a situation. Damage something suddenly.

You will mess up the wedding if you decide idea to play the piano. You suck!

mess up by Favelasqa September 1, 2016

missup 

A paper mashe dinosaur belonging to a lesbian named Calvin who is the son of patreece. It is a yellow doll will coloured shapes on it and hides underneath Calvin's bed. Its only words are "M-m-m-missup."

Hey, Fluffy check out that lesbian with that dinosaur doll...it must be a Missup!

missup by Coonetta April 20, 2005

major league mess up 

Also known as a mlmu, it is used to describe a moment when someone (including yourself) humiliates themselves, reveals a secret they didn't want to reveal, says something bad, etc. In public or in front of the boys, and Is so bad that it can only be described as a major league mess up

Person 1: hey, did you hear that (famous person) said the n-word on their social media account?

Person 2: yeah bro, that was a major league mess up

major league mess up by ChezE May 2, 2020

Mess up 

To change something and bring its value to a lower degree.

I balled up LeBron James and took him to the hole in 1 on 1 10 times. I won the game 10-0. He told me I should play in the summer pro league. I said no way, nuh-uh, that shit might try to mess up my game.

Mess up by MatthewSzymanski December 18, 2020

messui 

the goats

my cock is messui

messui by messui October 2, 2023

Mossup 

It's actually really scary what a Mossup is.

Lives in the garden, they're magical, but they look really creepy.

Look up "The Rigglers"

Mossup by Tim March 23, 2005

Mess up 

Me

I am an Mess up

Mess up by Dakota Wilcox December 9, 2019