Hear me out--someone who has consumed so much cum (or jizz) that they have to vomit it back up. May also refer to when frosty the snow man drank too much orange juice and used himself as a projectile to punish the young whipper-snappers (probably Jeff).
I eagerly gave unto him my acidic reverse dirty snowball. He didn't hate it.
Jerking off into your partner's mouth while looking at a picture of coach cal and current year's team. Your partner then spits the load into your mouth, slaps you on the ass and yells "Go Cats!"
Bruce: Bobby Jo hurry up!! The game 's about to start! We have to do our pregame Lexington Snowball! We ain't gonna let down Coach Cal, Ashley Judd and Big Blue Nation this time!!