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1.
Term used to describe fan-fabricated homosexual relations between the soldier and the engineer characters from a game called Team Fortress 2.
That soldier may be an annoying, anal attaboy, but he throws a fiiine helmet party.
by KGBigelow May 24, 2011
43 6
 
2.
A party where there are only guys in attendance
Where are all the chicks? This is a total helmet party.
by Tubby John June 21, 2006
15 9
 
3.
A gathering or party where attendance is mostly, if not all, dudes.
we can either go to Ted's helmet party or go out and troll for chicks.
by KeJo September 19, 2007
8 7