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2.
when a guy is doing another guy in the ass, and then the guy thats getting piledrived in the ass farts, and the gassy vapors enter through the the other mans penis, causing the gassy shack effect.
john gased my shack good
by valor November 14, 2003

Words related to gas shack

gas gasshack scream shack
 
1.
something grampas scream in the
middle of the night
unexpectedly

and usually while dreaming
ZZZZZZZZZZZZZZ.....
"IM A GAS SHACK!!!!!!"
ZZZZZZZZZZZZ......
by alaskadude April 01, 2009