Over the years I've consistenly gotten the, as I call them, "comparitive + 1" comments:
"How much ya bench?" - pause for my answer and then their response - "Yeah, my brother's friend's cousin's boyfriend's uncle's high school pal benches 10lbs more."
"You're a pretty big guy, but this guy down the street is like twice as big as you."
"Ya know, back when I was a marine in the 60's I was 300lbs top shape and I was a lot bigger than you."
"I used to have arms like that, but mine were bigger and more defined."
"I bet you can lift a lot of weight, but I know this guy........"
For some reason people are compelled to give me a brief history on a perfect stranger who's always better than me LOL!! Why not tell the same to the guy next to or in front of me?