gluten free-tard
Any asshole that cruises restaurants spreading the fear of wheat into others while angering the entire staff and probably half of the customers. They do this while asking 30 questions and proudly sending back dishes that they fear contains an ingredient that almost nobody is allergic too until after they start the diet.
"excuse me sir, has this plate touched wheat ever?" "Are you allergic to wheat or are you a Gluten free-tard?"