Maybe not the "Most annoying response when you tell someone you're a homebrewer?", but I think I earned "Most annoying homebrewer" when something stupid popped out of my mouth before I could even censor it: I was at a dinner party, where two of us are homebrewers, and we were first sampling some plum wine, and then cracked open my Rye IPA. I rinsed out my wine glass to drink from, as there were no beer glasses present, and the shape of the wine glass is great for the aromas of the Rye. The hostess, seeing me starting to pour, said "No, wait, we've got beer mugs in the freezer, let me get you one", and before I could even stop myself, I replied "Oh, no, I'd never serve a good beer that cold". The look of shock on her face was as bad as if I hit her.
Crap. I was that a$$hole. I still wouldn't drink it that cold, but I think I could find my way to being more tactful...
Wow. Dude.
He he. I've been there.