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getting a strobe light and waving your sack over someone while waking them up. thus they wake up to a strobing sack in their face. Works well while moving back and forth while making techno sounds.
dude you should of seen his face when i strobe sacked him. he didnt know what was going on!!!
by alext128 June 21, 2006

Words related to strobe sack

balls flash moon mooning sack sleeping strobe