A girl prepares a bowl, nay, a chalice, of warm milk and grabs a number of straws (preferably four).
The man places his balls in the goblet of milk as the woman places the straws in. She then proceeds to blow into the straws, creating a jacuzzi of warm milk around the man's balls inside said holy grail.
Always go 2% milk. On holidays use eggnog.
girl: *blows into staws*
guy #1: OUUUUGGAAHWWWWWWW yes.
--the next day--
guy #1: last night my girl gave me a jacuzzi mcdoogle, bro
guy #2: what kinda milk?
guy #1: 2%, duh