Hmm..
I agree, a random walking up to you at the gym asking that question would be akward.. make them sound like a cop or something, lol.
I couldn't read through the whole thread cause its too damn long, but what about friends / family if they ask. Most of you just deny it?
I think I would just come clean.. I wouldn't care, lol. Unless they were a young kid.. Then I'd say Broccoli and Vitamins.