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.