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2.
The act of taking a shit really quickly. Named after the Megadeth song of the same name, which is, coincidently, shit.
"Oh no, she's coming round in three minutes!"
"You better take a high speed dirt"
by stabby mckinfey August 14, 2008
 
1.
a kick ass megadeth song
its on countdown to extinction, track 8 is called high speed dirt
by bbbigbossbb October 16, 2005