Which funny ideas would those be? That many gay people act different from straight people? There seems to be some suggestion here that it is rare for gay men to act a bit more feminine. In my experience, it seems to be the opposite, that gay men do indeed act more feminine then straight men.
For example with the ballroom dance gays, they go around calling each other as a term of endearment "Whores, sluts, bitches, etc" and other terms generally associated with women. I have never seen a straight dude say to another straight dude in a girly voice "You are such a slut". Or straight dudes giving each other girly hugs as greetings. Or straight guys grabbing another straight guys hands to lead them somewhere. Or saying that a certain outfit looks "Cute" on them. This is the kind of behavior I have observed in almost every gay dude I have came across. I am not saying that this is how ALL gay men act. I am simply saying that all of the gays I have came across have acted in this fashion.