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Warming your hands by placing them within close proximity of your balls. Pants must be used for maximum effect (otherwise, you're just fondling your balls).

This comes from the East Asian tradition of warming your hands with your balls.
"Dude, it is so freezing out here. I'm gonna stick my hands down my pants." - Person A
"Don't you mean to pull an asian hand warmer?" - Person B
"Yeah sure whatever." - Person A
by Gordonite February 14, 2012