Someone who sucks the fun from everything.
In aftershift training, instead of letting us go off the drop slides, the head guard made us practice CPR. Our head guard is a fun vacuum.
by johnny mc awesome August 15, 2009
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Typically the member of the opposite sex who ruins there fun by not letting them go out.
Christian: Corey lets go for a half dozen drinks after work
Corey: Man I really want to, but the fun vacuum wants me to go grocery shopping.
by ..FOA..... May 2, 2008
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