Yes, there is air under there

And she is at the top of the stairs. Not exactly what you want your 2-year-old doing.
I know I have taken pictures in the past of my children doing all sorts of things that probably should not be encouraged, but I promise you that was not the case this time. She was just standing there, actually smiling at me, so I put the camera to my face and took a couple pictures. The next thing I knew she was sitting on the top stair giggling excessively. Only when I scrolled back through my pictures did I see the reason for all the giggles.

Seems her big brother has been teaching her a few tricks......