My wife and I were putting our kids to bed. We were explaining to my daughter that Dad had put her to bed and Mom would put our son to bed because "Mom has the boobs" and the baby needs to eat.
My daughter started joking that she wanted to "drink from Daddy's nipples," knowing full well that she couldn't do that. So we go upstairs to put the kids to bed. While my daughter is brushing her teeth in the bathroom, I'm standing next to her using the toliet. She looks over at me and says: "Hey dad, how 'bout I drink from your penis?"