I'm a "Y"

So Hannah layed down on the floor and stuck her feet in the air in a poise like the above picture. She then said. "mom, look at me. What am I?" After numerous guesses I couldn't get it right and Hannah finally said, "I'm a Y." Well, I still couldn't figure out what she was talking about and just said something like ok honey and forgot all about it. Well, she kept doing this throughout the day and it finally clicked. Yesterday on Sesame Street the letter of the day was Y and they had a lady doing a handstand with her feet apart like a letter Y. Hannah was just doing her own version of the a human letter Y.