To have anal sex with someone. It evolved from people saying "B.F." (butt fuck), and it's where the B and F come from in the word.
You probably boof your sister.
by Mieumieu December 4, 2020

by DoggyDoggyDooDoo July 7, 2023

by CollegeAlum October 2, 2018

Definitions :Guy with a big beer belly? -BOOOF
You see a big girl walking down the street?-Boof!
Cow?-BOOf
Fat cat?-Boof
huge thic muscle man?-BOof
You see a big girl walking down the street?-Boof!
Cow?-BOOf
Fat cat?-Boof
huge thic muscle man?-BOof
by DeeTor33 May 29, 2018

by weboofin March 27, 2015

A shortcut to the phrase “Big Oof” by combining the words together as one. “Boof” however can be confused with “Boofing” which is an action that only sick freaks do and “pass the Boof” which is referring to a blunt or joint.
Trever: Hey, how’d it go with that girl?
Ben: Oh, we got to mess around since her parents weren’t home and I ended up waking in her bathtub.
Trever: And?
Ben: I was missing a kidney
Trever: Boof
Ben: Oh, we got to mess around since her parents weren’t home and I ended up waking in her bathtub.
Trever: And?
Ben: I was missing a kidney
Trever: Boof
by Ultra Jack Daniels October 23, 2018

by large baguettes January 11, 2019
