look up any word, like dirty sanchez:
 
2.
an ass that is moderate size and very soft and jiggly
My gurl Bryanda has a beef butt.
by Makaveli~R.I.P. April 30, 2006
 
1.
an anal cavity currently occupied by a penis.
slang term for anal sex
i gave my girlfriend the beef butt last night
by Quaid farmer January 15, 2009