What would you think if I told you I made out my sister?
It's a little disturbing, what would make you want to do that?
I'm drawn to her magnetic personality and she's attractive to me.
Your sister is cool, but at the end of the day that is your sister. Do not do things like that with your family members.
I don't care what you think. We'll do it again.
I highly recommend you don't do this. If other family members find out about it you'll both be in a lot of trouble. Also think of all the embarrassment that will come along with it.