A dude with a big fat ass that bullies smaller guys and or girls by sitting on their faces and demanding service.
"Hey man, you hear about Nick stinkfacing Rocky at wrestling practice?"

"Yeah, he's a real butt bully."
by Wicked Rooster October 21, 2019
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it means youre such a bully that youre a butt
"Jen is such a bully butt!"
by fartfarpoos August 1, 2022
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