It can mean one of two things :

1. When someone basically shoots themselves in the foot when doing something, screws themselves over, a self-fulfilling prophecy etc.

Or...

2. When you get beat at something or get your ass handed to you by someone in any way, shape or form.

( Note : Check yourself before you screw yourself. )

Simply put, don’t be a foot-ass. Lol.
Examples :

And to think, Tyler thought he was all that and a bag of Pretzels... Boy, what an absolute foot-ass!

Or...

Everything was fine until Phoebe started to shade us around her new friends... She’s been such a foot-ass lately...

Or...

Can’t you go 5 seconds without being a foot-ass?
by July 11, 2021
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A derogatory term for wrestlers in the MMA world. They always shoot for a takedown at the earliest opportunity. Fucking annoying.
He hurt him! HE HURT HIM! No one saw it! That's why he shot for a takedown! Dusty ass bitch!
by thelastgynobender November 24, 2021
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A fine young lady named Bree with a juicy ass and a nice hole.
Boy #1 - “Damn, look at Bree’s Tight Ass”
Boy #2 - “That shit is lookin hella bussin
Boy #1 - “I think I’m gonna bust
Boy #2 - “Me too”
by Popycic August 29, 2021
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a day in which one sucks someone's ass. it's only on tuesday tho
"oh hey it's tuesday!"
"did you know that tuesday is ass-sucking day?"
"really? no, i didn't!"
"well, you know what that means..."
by THE ass sucker December 17, 2021
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When someone in your house farts so loud that it wakes you up in the morning.
I was woken up this morning by my Tom's ass rooster.
by JayMan2018 November 20, 2018
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An insult. Used to poke fun at a friend.
“You have such a chappy ass, lmao
by bleedbleed October 20, 2020
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