Definitions by CaliGirl16

Butguster 

A fart, methane emission from the anus, or toot if you're under 5 years old. The phonetic opposite of gutbuster, a hilarious something or other.

Grandpa, you're an old butguster.
Whoever smelt it dealt the butguster.

Butguster by CaliGirl16 July 29, 2016