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1.
A scientific word meaning to "pull from one's ass." In the below sentence, this means that one or more scientists pulled that fact out of their asses. Whether or not they pulled your mom from one or more of their asses is left open to question. She may still be in there.
Scientists postulate that your mom has been fucked over two billion times in human history.
by Mecha Godzilla October 18, 2007
 
2.
To postulate means, but is not limited to, the following:
-An Orgasm
-Masturbating

-Jizzying
-Cumming
-Basically anything sexual that has to do with the excretion of juices.
Wow dude I just postulated so hard. I Postulated so hard last night. Oh this picture will really help me with Postulation.
by LowfatCriminal October 07, 2011