I mostly don't tell anybody. People seem to ask me a lot if I am a vegetarian, mostly I guess before they offer me something that isn't vegetarian. I tell these people that I'm the opposite of vegetarian: I eat mostly meat. They get a good laugh and it makes them feel better about me.
The people I have the most difficulty with are the ones maybe 10+ years older than me who start lecturing me about "heart-attack food". They go on and on and on lecturing me even if I have said absolutely nothing about my diet except to tell them I'm not a vegetarian and I eat meat. Those people all have a similar appearance. It's hard to describe, but they appear deflated, dried out, watery eyed and sort of clinging to life by a thread even while they look like they've made some kind of weight loss and health advance in their lives. Maybe it's the statins. Anyway, they feel a need to preach because they barely survived a heart attack and were brought back to life with a typical low fat diet and CW medical intervention and feel a need to save the heathens like me who are close to their age, before it's too late.
Female, 5'3", 50, Max squat: 202.5lbs. Max deadlift: 225 x 3.