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A "dumb and dumber" dump is usually experienced after a heavy night of drinking, it is a rare but satisfying ocasion where you loose all form of bowel control. Simply sitting on the throne and holding on for dear life. Named proudly after a scene from dumb and dumber
Dave: Jesus christ I'd leave it five minutes man

Jaime: You had a bit of trouble with that dodgey pint you had last night

Dave: Better believe it man, I just totally destroyed
your toilet with a dumb and dumber dump!

Jaime: You're such a cunt.
by djb1905 January 28, 2008
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