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."
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!!
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.