This phrase is ussualy added onto a compliment you extend to your brother/sister/mom/dad, but don't want to make it sound... incesty and akward. Just like the phrase, "No homo". Then no one can accuse you of incest.
That blouse looks nice on you Daniela. No incest.
by c00lbeans January 31, 2011
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having sex with your mom on a regular basis would be considered incesting
by Baybee Becky September 2, 2008
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Having sex with members of ones own family.
Incest, the game the whole family can play.
by JJ July 30, 2003
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Getting your own mother pregnant, then getting that daughter/sister pregnant. Therefore, it's a sister within a sister. Inception + Incest = Incestion
Woah, you got your mom pregnant? Then that child? INCESTION!
by Lily69 March 6, 2012
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When a girl fucks her dad on the regular in exchange for money and cars
Bro i here that chick gets HUGE incestment form her dad.

WHOA NO WAY DUDE.
by toxic cowZ April 15, 2018
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A blood relative with enough beauty to warrant serious contemplation of sexual relations.
I haven't seen my cousin Jessica since we were kids...fuck me running - she's incestable!
by Alison Chaynes May 22, 2009
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