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Anal sex. For a male to penitrate his penis into someone else's anus. Usually a derogatory word used to describe homosexual(male with male)sex.
I bet those two guys are going to shitpack each other tonight!
by Barcode23 October 16, 2003
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A group, gaggle, pack, flock, or herd of shitwinks. Most commonly seen and/or heard at night in ramschackle student "ghettos."
"Look at that shitpack! There must be a dozen of the little cockweasels!"

"Ah, yes. Let's plow through them with my Volvo, shall we?"
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To be anally penetrated so that the shit inside ur anus is "packed" down.
To pack your stuff and leave.
At Rikers Island, you often get your shit packed

Man: baby mama yous gunsta get outta ma house nd gimme my kids.
Woman: Nah nigga, they my kids you havnt paid child support in years
Man: bitch ass, get your "shit packed" and leave me alone

by adrian and dan June 22, 2007
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