Top Definition
The Sipan Flu is a made-up disease and codename used by people who can't make it into work the next day because they're busted from having been worked over on all fours the night before. In other words, their ass hurts too much to move.
DUDE! Where the fuck is Eric, I haven't seen him in two days now?" "That fool called in sick to work, says he got that Sipan Flu!" "Damn, again? He just had that shit 2 weeks ago!
by INTOXSICKATED December 09, 2010

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