Can you be a little more specific on who "they" are? Is there anyone you can safely tell? Sometimes it helps to have a confidant to talk with.
Schizophrenia has a lot of stigma attached

and that may be why they are saying things. It's easy to make fun of things you know nothing about, and tv doesn't help. They portray schizophrenics as really whacked out people.
Hang in there!