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 17, 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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A homosexual male.

Could possibly be used for a heterosexual male who likes to dish out anal action.
Anton and his boyfriend are leaving for spain. Fred asks them "Wow guys how can you afford to sleep in when you have a plain to catch in 2 hours? Don't you have any packing to do?"

Anton and his boyfriend answer: "No that's okay, we totally packed our shit last night."

And that's that (true story!).
by Fred Finkle May 25, 2004
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noun A
- male who enjoys shoving his package into the anus of the same sex.
- someone who is naturally an imbecile
by cr September 19, 2003
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When a man jumps off the bed, perfectly landing his dick in another mans anus, who is laying face down on the floor. It is said to pack your shit so tightly, your poop comes out as hard as a diamond.
Have you packed your shit together for our vacation?

Yea, I'm a real shitpacker.
by LittleCreek853 November 21, 2016
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