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Verb. To slap ass while already in twerking motion, used to prolong or encourage movement.

Noun: a backhand across the ass as a punitive measure for lackluster twerking performance. Can also be used as a greeting similar to a jimmy-tap.
Constant song changes forced me to twerk-slap the girls to stay on cue.

I had to twerk-slap that ho when she only came back with 50 dollas last night!
by leahandchris June 26, 2013
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