When having sex with a male(homosexual or transexual) and their penis slaps against you.
As we fucked, her penis kept hitting my leg, causing thwack-back
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any exchange in which opposing parties will carry out brazen competitive acts purely based on the idea that self-fulfillment will be derived from the intensity of the sound produced when they allow the underside of their dick to drop onto a cold, granite countertop (i.e. a thwack). The louder the thwack, the more intrinsically valuable that person is to the world.
Kline keeps donating money to organizations to have buildings named after himself, and Specter reacts by donating more himself, to place his name on more buildings. It's a giant-ass dick thwacking contest.
The cold war was effectively a dick thwacking contest between the US and Russia.
n.)a series of words (which may be used in any order) stated in a sarcastic manner in order to point out the lack of sense or humor in a ponk or zinger (see ponk and zinger)
may be followed by a questioning "what?"; ponk or zinger may follow the last word of the three, pending the type of joke or statement in question, though this may uneccesarily elongate the phrase, which will ultimately deduct from its humor
guy 1: dude, i felt so stupid after failing that test...
guy 2: ur mom felt so stupid after faling my test!
guy 3: Oh! burn-zap-thwack...zinger!(said in an excited yet evidently sarcastic manner)what?
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A boy or he-she who is playin with his feet, mouth and belly button
That boy Damien(omenboy 127) thwacks off cause he doesnt know what jerkin off is...lol.
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Slowly but backwards moving/ gravitational pull to specified designation of not getting robbed by tweakers
Look at that fuddle thwacker doing the usual dumbass buying from convenience store called golden express
To soak a mans penis into a pint of guinness and then slap a womans face with said guinness soaked penis.
Person A: Where was bob last night
Person B: I heard he was giving his wife the irish thwack
Person A: My Goodness!