bad parenting at its finest

Ok I know this sucks but seriously, there had to be 2 things you did not teach them about. Sibling boundaries and condoms. (hopefully taught separately)

I would say something , but I better not, just best of luck .

There's something other than the age that matters here that no one has brought up, and that is how long you guys have been married. I mean have they grown up with each other as brother and sister most of their life? Cause if so that's gross. Reminds me of Dexter where Deb realizes she's in love with Dexter (her step brother). *yuck* Here's what I propose: After the baby is born send your son off to military school and your daughter to boarding school and when they get back try to convince them to sign custody over to you because hopefully they will have matured while they were gone. And hopefully the baby would never know they were his/her real parents until he/she is old enough to understand. Oh, and FYL, OP.

Push her down a flight of stairs and kick him in the nuts hard! I'm only half kidding. Someone needs a job and one of them should be moving in with their other parent.

Wow

Wow...just wow.

I REALLY hope you've only been married less than four months or they were together before you got married. But either way, they knew they would be related soon so that's still kind of gross. Have fun explaining the family tree to the kid.

I can't believe you didnt teach your son better. Thats unbelievable.

That's disgusting >.