The impromptu act of forcefully releasing one's schlong from his pants and subsequently whipping it across the temple, ear, or forehead area of the target subject.
Come closer so I can dongslap you.
Rosie looked at me funny, so I dongslapped her 14 times in a back-and-forth motion.
Rosie looked at me funny, so I dongslapped her 14 times in a back-and-forth motion.
by Don Max May 12, 2003