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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 02, 2008
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
Fun sucker, person who ruins everything
"Gosh your such a fun vacuum"
by Ray Dory September 23, 2009