Speaking of weird dancers, there was this fella named Perry who used to attend our local swing dance events. He was another weird fella. He was a good dancer, but he always had this ecstatic expression on his face, no matter what kind of dance he was doing or what kind of music was playing. Heck, he'd have this weird open-mouthed expression on his face, even when dancing with a woman for the first time.
Now, I can understand smiling with a dance partner. That's more than fine, and it's even a good idea, especially when dancing with a newcomer. He had this weird expression where his mouth was wide open and his head was tilted as though he were in the throes of ecstasy. It was just plain strange.
And he'd try to do aerials with first-time dancers. Not a good thing. Common sense should tell him that it's a bad idea.
I know one woman, Colleen, who chewed him out once. He had danced with one woman and got all creepy with her. He later asked Colleen to dance, and she said, "No. Not after what you did with my friend." Colleen was right to do that, as far as I'm concerned.