Tum Diddley

The act of ejalculating into a belly button and placing cereal in the belly button (prefereably Lucky Charms). Now you grab a spoon and make your bitch eat that shit while you chill on your ass and play COD.

Tom: Yo, i was playing COD last night and this biddy knocked on my window so i let her in and we shared a nice Tum Diddley.

Harry: That is radical dude!