Top Definition
The act of unknowingly masturbating while sleeping, often to the discomfort of your bed partner. Not usually remembered the following morning.
Lady: Sorry I couldn't help you out last night... I had a headache.

Dude: Whaddaya mean?

Lady: Oh, you don't remember? You woke me up three times last night, you were sleepturbating.

Dude: Oh, I'm sorry. I had no idea.
by emuishere December 20, 2009

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