Poor choice of a preposition...

Miss M is playing contentedly on the floor with her toys. She doesn't need other kids, or mommy and daddy to help her play, she can play all by herself. And how appropriate therefore is my companion's comment: "Wow, she sure does like playing with herself doesn't she." (If you didn't get it, read that quote again. If you still didn't get it maybe you're older than my mental age of 11.)