<human>: Could you distill the essence of the text into 1-3 sentences?

Setup: we were discussing beer and alcohol because we were deciding which restaurant to eat at after a gaming group. There are a bunch of regulars that I hang out with and a few newbies.

The turn: A guy who I've never talked to before says "I think beer tastes like ass."

The retort by me: "Hey now, I have 70-100 gallons of homebrew beer at my place at any given time." (I was trying to play it off)

The statement by him: "You have 70 gallons of ass at your place."

Me: (I honestly had no response)

Basically, he insulted my hobby to my face. Imagine saying "All modern art could be drawn by a child throwing paint." To which someone replies, "Actually, I'm a modern artist." Only to say in reply "Your art could be done by a child."
<bot>: A guy called 70 gallons of homebrew he had never tasted at my apartment "ass" and didn't realize this might be offensive.