This is an interaction between myself and my son from earlier today.
TheBoy is playing with a stuffed animal and pointing out different body parts.
TheBoy: Eyes. Two eyes. One. Two. Ears. Nose. Tail.
He then grabs at his behind and says in a questioning voice,
Me: No. People don't have tails.
He then grabbed at his penis, pulling it and announced, "Penis. Tail."
Um...no. Good try, though.