Top Definition
When a person dates someone that has the same name of one of there immediate family members.

Do not confuse with name masturbation.
Person H: So what was the name of your girlfriend? Rebeca? The same name of your sister?

Person T: Yea... Still getting use to the name incest...

Person H: Name incest, awkward as fuck.
by For The LuLzz February 03, 2011

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