Thunderfisting

The action of fisting a persons anus so fat that they fart.

"Bro I was thunderfisting Joyce yesterday."
"How loud was it?"
"85 decibels bro"

by Uncle brother bobby September 30, 2016

Thunderfist

A drunken rock and roll band from Salt Lake City. Known for hilarious live sex acts onstage and random food eating contests during their shows. The name is derived from a German pornography magazine depicting a hard punch to the back of the head while ejaculating in a person's anus..

Did you see Thunderfist last night? How can they get any more fat?

by Whistledick Pete September 2, 2010

Thunderfist

When a man very finger a girl very aggressively and hard

Tom was giving better the ole thunderfist last night I heard it from next door

by SHAMELESSĶILL-_- July 23, 2025