"Tails" of a 3 year old

I don't know what makes this story funnier, the actual act of doing it, or Hayden's description of how he did it. Hayden had just finished his bath for the night and was getting dressed, or so I had thought. I was sitting in the living room with my Dad watching t.v. waiting for him to get finished. A few minutes later, he comes downstairs, completely naked, giggling like mad. He's in a phase right now where mooning people and streaking are high on his to-do list for the day. Let's hope that ends by September. Anyway, as he's standing in the living room naked, my Dad asks him where his underwear is to which he replies he didn't know. Obviously not thinking Hayden would take it literally, my Dad asks him if his bum ate his underwear. With a laugh, Hayden ran upstairs. A few minutes later, Hayden comes downstairs, still naked, but this time he's added something. "Look Mommy, I have a tail!!" He then turns around and hanging from between his little buttcheeks is a pair of his underwear. He crammed those suckers in there so well, he was able to walk down the stairs without them falling out. "What are you doing?!" I asked him, trying not to laugh at the same time. I can honestly say I've never seen anyone with a pair of underwear hanging from their butt. He then proceeds to explain to me, step by step what he did.
"I went up to my room and pulled my buttcheeks apart. Then I shoved my underwear up my butthole and now I have a tail!!"
Being the great mom that I am, I asked him to wait in the living room completely naked with a pair of underwear hanging from his buttcheeks so I could go and grab my camera. And he waited.....