A fork of Rural Dictionary
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.
slang for anal intercourse To entertain someone in your ass
Why don't you bend over and assertain me?
Someone who was delayed because they were busy sitting on the toilet.
He could not answer the phone because he was temporarily assertained.