to dry hump someone of the same sex once with great vigor while they are bending over while shouting "OOST!", perhaps while they are picking up somthing. idealy an oost should knock someone over. oosts can be performed from a standstill or with a run up.
mr a is bending down to tie his shoelace and mr b runs up behind him, performing a running oost that knocks him flat on his face.
by heinzie July 11, 2008
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the sound made by someone throwing a punch
"oost oost, you want some cunt? oost"
by heamorroidsteve November 20, 2019
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One person pleasures themself while another shoves fig newtons or similar snackagesin various orifices and urinates into a bottle as it showers over a third peron.
by Tony Emigh January 11, 2009
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another word used for anus, can also be used to describe a fat person.
"put it in my oost"
"yeah bro she is an oost"
by jessebakesyourdad July 16, 2015
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