Top Definition
To quietly and calmly lose one's mind, stab someone fifty times, slice bits of them off, consume those bits, decapitate victim, then display the head as a trophy to shocked bystanders. See postal.
Darren is at the end of his rope with the Japanese account. I'm worried he might go greyhound on them.
#going postal #postal #greyhound #virginia tech #ape
by Sttocs August 06, 2008
To go crazy and stab the shit out of people. Like "going postal" with a knife. Also, Greyhound's advertising slogan.
Dude had a knife and decided to Go Greyhound on people. The police tased the shit out of him.
#knife #bus #crazy #postal #decapitate
by khreng August 05, 2008
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