When a skinny white boy gives his girl anal and her poop gets on his dick. The slang name comes from when you get a vanilla cone from Dairy Queen and get it dipped in chocolate. It is customary for the girl to lick the guys dick clean following their anal session
When jerking or being jerked off you lie on your back and ejaculate straight up...the load comes down all over the tip and hand thus looking like a melted ice cream cone