It isn't, nor is it ever, acceptable to make derogatory comments about another person for whatever reason. There isn't a person walking this planet who at some point in time couldn't be made light of for something they said, did or were. It is unfortunate, but the only way some people can feel better about themselves is to make someone else feel bad. People who chide someone else for their inability to conform to what some feel is the norm are only displaying their own ignorance and total lack of understanding of any kind of empathy. These people are to be pitied for their shallow view of the world's people.