Short, but great GM

A couple of 6 year old girls from the neighborhood were playing with my son today. One is a tomboy and looks/acts like one and her sister is stunningly beautiful. My son asked me to fill up some water balloons and as I filled them up one at a time, he continued to talk with the pretty one. At one point, he had two water balloons in his hand and pressed them together. He said: Hey, these look like butt cheeks. He looked at her and said: Do you know what butt cheeks are? She said Yes. He said: What are they then? She got a smile on her face and bent forward. At this point, I thought: OK, she is going to pull her pants down and show us what butt cheeks are. The next one second took about 5 minutes to pass. She reached back and grabbed her butt cheeks and said: These! She had these thin form fitting pants on that showed her shape nicely. Unfortunately, the topic was exhausted and they were on to something else.