My Husband and I were in the tub having a little fun when our 4 year old daughter walked in. She was supposed to be napping and my husband didn't lock the door when he came in. He was on top of me and I tried to shove him off when I saw the door opening so I could at least sit up before she saw. Instead he put his head under water and just froze. I didn't realized it but I put my legs over his head in the process of trying to sit up so I was kind of holding his head under water for a while.
She had the funniest look on her face and I couldn't think what to do for a few seconds. I finally told her to get out. She just goes, "what is Daddy doing?" At that point he finally came up for air choking. I tried to think of an answer but all I could do was laugh and say "I have no idea! He's just being weird." She was happy with that answer and I finally got her to leave the bathroom.
I REALLY hope she doesn't remember this later on and tell someone what she saw. Especially someone like my mom who can't even fathom the idea of oral sex. She would FREAK!
So ladies, my PSA for the day, always lock the door!