Top Definition
When individuals who tend not to fart abruptly in public use the toilet for a #2 Job and as a result of holding it in, a sound familiar to that of a 50. Caliber machine gun occurs, capable of ripping apart the porcelain lining of the common toilet.
Holy cow! did you hear that Lehman dump in the room beside us?! I thought we were under attack!

Yeah Mitch's dump was a definite Lehman dump.
#poop #toilet #dump #lehman #crap
by Birdman117 March 11, 2010
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