Sister can't help it that she wants to fuck her brother

Our parents are at the casino so it's the perfect time to fuck my brother again. Last time we were almost caught having sex and it would be a complete disaster if they ever discovered our secret. I can't help it that I want my brother to fuck me and get me pregnant! I'd love to just move out with him into our own place and raise a family. I don't care who finds out about our romance, just as long as it isn't MOM and DAD!