The act of masturbating to an imaginary woman as opposed to watching porn.

Imagerbating usually takes place in the shower where pornographic material is not available.
Bernie was in class the other day and saw what he liked, a girl with spandex pants, so he went home and imagerbated all over the shower wall.
by beeg's 9 April 7, 2009
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P1: Oh man, i was so horny last night and i didn't have anything to masturbate to!
P2: Oh God! What did you do?
P1: I imagined that bitch we saw at the mall yesterday.
P2: Now that is using your imagerbation skills bro!
by Penis Hugar Cumalot June 18, 2011
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