when you like a guy for so long and they show absolutely zero interest back so you take matters into your own hands and print pictures of him , then you proceed to preform intercourse with said pictures.
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!
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.