What does it mean "to pull a Charlie Gordon?

Whenever Joe and Frank make Charlie Gordon fun or fool, people always say Joe and Frank had pull a Charlie Gordon. So I think it meant to make fool of Charlie Gordon because Charlie is not smart, all the time people always laugh at him. Charlie thinks that it was fun and they are really his best friends. He doesn't understand what it means "to pull a Charlie Gordon". Charlie is getting smarter every day, he starts to think about stuff. That was time when his friends invited Charlie to a party. Here they had a lot of fun. Joe knows that Charlie does not know to dance but Joe suggested Charlie to dance with Ellen. While Charlie is stripping because somebody's foot was always sticking out. He is really ashamed. That's why he understood the saying "to pull a Charlie Gordon". From this event, "to pull a Charlie Gordon" is to make full of a stupid guy because Charlie Gordon was dumb.