When two family members have sex. I'm not saying that they have to be in/from Albama but hey, almost always are.

To really, really, really love your family.

When somebody has sex with a member of their own family. When in doujinshi or fanfics, when two characters who belong to the same family, do such a forbidden action seen as wrong by many, but consensually because they are in love with each other, it automatically hyperboosts the quality of the doujinshi/fic. In real life, there is a level of controversy regarding incest. People in America can't do it, even in a consensual manner, by law, the British Royal Family has to do it by law, and some places probably don't even give a fuck whether you do it or not, as long as both partners wanted to do it, therefore no one being raped. When a lot of people think incest, they think deformed children and rape. But, birth control + consent of both partners = the right to declare a stereotype that anti-incest laws revolve around, false. Incest = redneck? Not necessarily. Anyone from any walk of life could be practicing incest. If somebody falls in love with a family member, you know sex will most likely be involved, therefore stereotype #2 has been declared false.

Incest is best

a game the whole family can play

to bone ur family members or blood relatives a sport commonly known to take place in coaville(east midlands)

Miley Cyrus and her dad.

Something that makes my penis extremely hard.

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