Thunder Fap 

In the act of masturbating to online pornography, when your hand reaches the top of your shaft and slams the desk and creates a thunder-like sound.

person 1: Is it storming outside? I hear thunder but I don't see any lightning.

person 2: Oh that's just John in the next room over thunder fapping. He must be watching some good stuff.

Thunder Fap by Spilner May 5, 2011

Thunder Fap 

The act of fapping very loud and quickly, much like thunder.

Is that a storm, or is my roommate just thunder fapping?

Thunder Fap by pimpassnigga September 11, 2012

Thunderfap 

The art of fapping with rediculous might or strength.

I was totally engrossed in my thunderfap session when my mom walked into the room...how embarassing!

Thunderfap by SallieKatt May 1, 2011

Thunderfart 

A Thunderfart is a fart that, when farted it sounds like thunder.

"Is there is storm coming?"
"No. Why?"
"I thought I heard thunder."
"Oh... That was me. I farted a Thunderfart."

Thunderfart by Azeroth98 July 31, 2013

Thunderfap 

When your entire body cramps up from a single masturbation session with the most glorious orgasm you've ever had.

Damn dude, I saw some shit so crazy last night I thunderfapped and spent the morning in the ICU

Thunderfap by Marcus Kraulter November 19, 2011

thunderfart 

Expulsion of a large, loud and foul smelling bolus of gas explosively from the anus. Most often, but not always, accompanied by some liquid substance. Has similarities to projectile vomitting in that there is a large volume expelled in a very short time.

The poor child was writhing in agony, and was saved by the inevitable thunderfart.

thunderfart by Doug Pearson June 29, 2006

Thunderface 

A name for a small girl/woman that spaces out consistently but can really superman that ho, depending on how much attention that ho is paying to its surroundings.

Watch out its Thunderface!

There goes thunderface, having another emo moment.

Thunderface by Viruskill22 August 11, 2009