To repeatedly strike a prostitute until she stops biting your tongue.
As made famous by Vince Offer aka the shamwow guy.
"Prostitute Survival 101: Do not be afraid to shamwow the prostitute if she attempts to bite your tongue"
"I was with this crazy prostitute last night who tried to bite my tongue...fortunately i was able to shamwow her and get away"
"Wow, that hooker just got shamwowed!"
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