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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Miley Cyrus and her dad.
I was reading vanity fair yesterday and i totally saw incest
by makeruppersagain January 25, 2009
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Of incest.
John had an incestous relationship with his niece.
by Kung-Fu Jesus April 17, 2004
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Pretty much the whole city of Shawano, Wisconsin. See Inbred
Tyrell: "You notice everyone in Shawano pretty much looks the same?"
Devonte: "Well the town motto is, 'Why walk across town when you can walk across the hall?'"
Tyrell: "What does that mean?"
Devonte: "It means that your mom is your aunt and your dad is your uncle."
Tyrell: "I still don't get it."
Devonte: "Definition: Incest means your family members screw each other."
by ToFlyToDie March 15, 2015
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It ain't incest unless it goes in!

Something done with family members when one feels that there is absolutely no other way of getting any

Adolescent experimentation, when two siblings are too nervous to approach anyone else
Johnny's sister gave him a hummer last night, but it's Ok because at least they didn't fuck
by pervo deluxe May 18, 2004
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antonio jossepi faccini shagged his sister and his cousin therefore incest
by Jack Tolley October 25, 2006
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