"A guy named Marty McShuffle travels to colonial america and sleeps with a prostitute.
Marty: Man, who could ever knew that colonial women were so easy get laid with.
Prostitute: Marty, do you want to know my name?
Marty: Sure
Prostitute: My name is Jane McShuffle.
Marty: OMG! I just fucked my great-great-great grandma! I am now an incestor!
Someone who had sex with their relatives; attracted to their family members; used to sleep with their siblings, parents etc; commits incest; incesting.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.