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slang for anal sex--to entertain someone in your ass
"Why don't you bend over and assertain me?"
by JMmm June 03, 2005
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3
To make a definite determination regarding someone's posterior.
A tight-fitting swimsuit can indeed show if a gal has a nice cute round rump, but you gotta actually "squeeze theeze" with your hand to assertain for sure if it is indeed as delightful as you'd expect.
by QuacksO February 28, 2019
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