sit one's butt down verb2 •(US, slang) To listen to another person without interrupting.I'm passing the phone to the annoying person whose only hobby is tossing me in the air fryer and shoving tissues down my throat whenever they feel like it. Sit your butt down, buddy. — 2024 •(euphemistic) Synonym of sit one's ass down. formssat one's butt down · sitting one's butt down · sits one's butt down