I've told this story before but it still makes me laugh, and to me, defines hardcore.
My buddy and I were in the changeroom after finishing our workout. It was single max day(I was powerlifting back then), I had just hit a pb of 540lbs on the deadlift, and my buddy had hit a 795 squat that would have passed in competition. We were comparing marks, my shins were bleeding freely and my palms were ripped to shit. He had burst all the blood vessels in his upper chest. Right in the middle of this 3 teenagers walked in, took one look at the crazy fuckers, and walked right back out.
To me, thats hardcore....