Caught in the act!

Ok so, my almost 7 year old daughter came in my rooms late last night because the wind woke her. Hubby and I were getting it on, he was on top, I had a leg thrown over his shoulder, and we he's the door open. Uh-oh. She laughed and said she saw daddy's hairy butt. Thank god i had my nightgown on still. I told her we were wrestling because we couldn't sleep either and hoped she was so tired she would forget come morning. Nope. My mom was over for coffee and she told her all about it. I'm positive she knows there was more to it because of how she was talking about it. She's at school, but I know I'm going to have to adress this later. Any advice?

UPDATE: So, she totally just bought the fact that we were wrestling, and is still cracking up that she saw daddy's hairy butt! She's totally innocent about it, the only talk I had to have was to remind her that we don't talk to our friends at school about private things lol.