If your friend know you're an anime fan.What is your reaction when you been insult about it.

In my case, there are some of my friend say that I watching a hentai or pornography stories every time I watching an anime.

They think that "anime=hentai"

For this kind of person, they think the anime fan are pervert and I absolutely hate about this kind of attitude...

Will someone help me how to give advice for this kind of person????
PLEASE