Need a snappy comeback

I had a guy at a local show ask me to open my hood when I told him my car had a 340. I told him it was not much to look at. He was excited to see it and tell his kid about how bad *** 340's are. Ended up being a pretty nice guy with a big block Satellite. Made a new car show friend!

Better to be polite than to be a smart *** and piss off a potential car buddy, part supplier, or assistant wrench turner.