Halo Hangover Share definition Flag When you stay up into the early hours of the morning playing Halo, then feel like crap the next day. "I finally beat Halo 3 on LEGENDARY, but now I have and awful Halo hangover. Halo Hangover by Kowdee December 23, 2008 0 0 Get merch Get the Halo Hangover mug. Buy Now — $32.95 See more merch