Halo Head
Getting and/or Receiving a blow job while in the act of playing a video game.
Last night, my girlfriend came over and I got halo head!
Halo Head
When some chick is suckin your dick while you own some motherfuckers in Halo.
Yo bitch, gimme some Halo Head while i pwn these cunt-rashes.
Halo-head
Receiving fellatio while playing Halo 2.
He busted his nut quickly while she gave him Halo-head.