Top definition
When you have no pornographic material to wack off to, be it still images or video, so you just use your imagination to picture a sexy image or day dream to get off on.

This comes from Greek philosopher, Diogenes the cynic. He would masturbate on the street, if he could not find a partner suitable to fuck. However, in Ancient Greece, there was no porno, it was very taboo to depict naked women, or even TALK about sex organs. So he must have imagibated.
"I perfer the act of imagibation whenever my computer breaks down|
by mrgroliebear November 05, 2009
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