When a guy and a girl have buttsex in a very cold place, such as a freezer or antarctica.
Guy to friend: "dude you know that smokin hot girl Mary? We had Alaskan anal yesterday outside in the 19 degree weather... My dick practically froze inside her."
When a male is "bopping his boloni" and is about to ejaculate, he runs up to the nearest naked man, woman, hermaphrodite etc. and ejaculates all over their ass. The name "Afgan Anal Bomb" comes from the suicide bombers in Afghanistan. The "Anal" part is quite obvious.
Dude yeah i gave that Arab an Afghan Anal Bomb! (it killed both of us)