To strike a foe on the back of the neck, while performing a series of random, distracting hand gestures before the initial strike.

May be followed by a Wolly-Dopp, or a Criss-Angel Sunburn.
Dude, you're pissing me off! You're about to get a Dilly-Wapp!!

Brian got a serious Dilly-Wapp at the bar last night. He's gonna be out for the rest of the week.
by Jaerrod June 3, 2011
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