Me: Why are you naked?

Her: Because I need to go to the potty.

Me: Why, then, are you just standing on the stairs?

Her: Because the toilet makes my bum cold…

(turns around to display cold bum)

… and there’s a sunbeam here…

(bends over and waggles bare bum in the stream of sunlight pouring through the landing window)

… and it warms it up.

(pats her toasted bottom proudly, and then proceeds up the stairs to the bathroom.)

You just can’t fault that logic.