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en·dog·e·nous adj.

Produced or growing from within.
Originating or produced within an organism, tissue, or cell: endogenous secretions.
True digestibility excludes the measurement of endogenous substances.

My jizz is produced endogenously within my penis.
by CaDick February 12, 2006
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Sep 6 Word of the Day
Style with Ease
Damn that was a steezy ass kickflip son!
by niggaliciouszor April 29, 2007
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