Masturbate. Or having sex with yourself.
My girl friend left so I am dating myself tonight.
by Avery B September 04, 2005
Top Definition
To make oneself appear to be dated, or older. Commonly interpreted as making yourself seem out of date, old, or aged.
"I know I'm dating myself here, but I was in Three Smile Island."

-Quagmire
by Chosen Sloth October 12, 2009
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