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
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