A sex act in which someone ejaculates into another person's mouth. That person then holds the ejaculate in their mouth for a period of time for no less than 1 hour. After the period of time has passed and the saliva/semen mixture has stewed in their mouth, this person then kisses another and forces the mixture into another person's mouth.
Dave: I picked Dina up for dinner last night, but she gave me the strangest kiss before we left. I think she was eating soup or something before hand, it was so salty.
Greg: Dina? She blew me yesterday afternoon. You think it was an abominable snowball?
Dave: Well fuck, that's the third time this month.
N. A particularly hardy pair of cojones which are capable of enduring great pain; usually found on Eskimos
guy 1 "Dude... they've been trying for half an hour to sac that guy..."
guy 2 "Don't you know he's Eskimo?"
guy 1 "He's got a pair of Abominable Snowballs then!"
guy 2 "Why abominable?'
guy 1 "Because Abominables bounce!"
guy 1 "........"