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thunderdump 

The act of defecation, where the person has been waiting for a long time and the result is an inordinately large and powerful session on the crapper. It could possibly break the bowl.
"Jeez Jonny. I just took a thunderdump. They'll hear that in china."

"That thunderdump ruptured something inside I tell ya mate."
thunderdump by Halit November 26, 2007

Thunderdump 

A violent bowel movement, usually loose, which the person may have been storing for some time due to lack of access to ammenities. Propelled by a buildup of gas caused by the fact that a fart during this time would have resulted in a follow through.

It is characterised by shitting out your entire lower colon (and, possibly, a kidney or two) in the space of 2 to 3 seconds.

The result leaves the thunderdumper feeling up to half a stone lighter, noticeably weak, but relieved.
Holy crap, I just had a major thunderdump! That was a three flusher!!
Thunderdump by GatoMuerto September 23, 2011

ThunderGump'n

The act of Pwning a fellow League or team member.
Dude 1 - WTF we are on the same side
Dude 2 - Dude, I just ThunderGump'd you ass
Dude 1 - Oh, ok then. ThunderGump'n kinda fun
Dude 3 - We are /^A^\
ThunderGump'n by J-String Man February 24, 2010

Thunderclumps 

When the sky won't stop thundering and it sounds like a series of low-key farts.
"Damn bro, is it ever thunderclumpin' outside"

"Wow these thunderclumps won't give up!"
Thunderclumps by Bedgypooks July 20, 2012

thunderpump 

I totally did her thunderpump style.
thunderpump by CB Smith October 27, 2004

thundercum 

to blow a huge load of semen in large bursts
After she sucked my dick i thundercummed all over her
thundercum by jizzking21 July 7, 2013