While performing a 69, you proceed to motorboat your partner's anus with your head, thus leaving a distinct smell and/or skid mark across your forehead.
Friend: Man, I love getting dirty halos, they make me feel hole-y!
Me: Damn that's some shit right there. By which I mean on your forehead. You've got shit on your head, bro.
Friend: Word.
Me: Damn that's some shit right there. By which I mean on your forehead. You've got shit on your head, bro.
Friend: Word.
by sexybitches58 November 24, 2012
Get the Dirty Halomug. The smell that radiates off of a whore. Ususaly caused by resisting to clean mixed with STD's. Like pulling a whole weekend of nonstop Halo whilst stewing in your own masterbation filth and microwaveable foods.
by Samsgotgame March 12, 2010
Get the Dirty Halomug. by The Band HP February 6, 2009
Get the Dirty Halomug.