Blunt force trauma resulting from someone's ass plummeting towards the target at high velocity. The impact is usually devastating and potentially life-threatening.
You think butt stomp sounds gay? Well, you won't think so with my ass flying into your ribs at Mach 2!
by GrandPooba1024 August 14, 2008
"What the hell you succubus, why'd you butt stomp me while I was just expressing my inner feelings for you?"
by Comrade Running Bear July 01, 2018