Kids With Benefits

1. When your Friends With Benefits or person you are dating but not married to has a child or kid that you treat as if they were your own.

2. When you use someone's kid or child as personal training to prepare yourself for having kids or children of your own.

Rob: Who is that kid?
Bert: That's my Kid with benefits.
Rob: You have Kids With Benefits?
Bert: It's just one kid.