Top Definition
Erotic stimulation especially of one's own genital organs commonly resulting in orgasm and achieved by manual or other bodily contact exclusive of sexual intercourse and specifically involving an automobile as a means of instrumental manipulation, sexual fantasy, or by various combinations of these agencies.
He was embarrassed when his grandmother walked into the garage and caught him in the act of autobation.

A few of the pages of his 'Car and Driver' magazine were stuck together, no doubt a result of an unhealthy car fetish and an incessant need for autobation.
by Dr. Fuchs August 21, 2010
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