<human>: This was about two years ago, but the lesson has stayed with me since then.

I was on vacation to the Outer Banks.  I live in New England, and the temperature rarely rises about 80 F here.  The pavement gets pretty toasty, but as long as you're careful, you can walk around barefoot.  Which I do, as often as possible.  The end result is that I have very thick callouses on my feet.

When I went to the Outer Banks, I decided I wanted to walk to the beach on the first day I got there.  The public entrance to the beach was about a quarter mile from where I was staying, and across the street.  That meant walking about a quarter of a mile on pavement.  And, as I usually do, I decided to go barefoot.

I started to notice something was wrong about three quarters of the way to the public entrance.  My feet kind of hurt, but it was a weird, buzzing pain.  Not sharp.  When I got to the beach, the sand was really hot so I noticed the heat on the tops of my feet.  Eventually, I got sick of the water and walked back.  Then I noticed something was *very* wrong.  My feet were killing me.  It didn't hurt as bad if I walked in the grass, but still pretty painful.

I finally got back to the house and sat down to take a look.  And discovered I had given myself second degree burns along most of the soles of my feet.  Over the next few hours, massive blisters popped up, and walking was agony.  I had to spend the next three days of my vacation hobbling around because if I put my full weight on my feet, it was excruciating.  Lesson learned: Pavement gets HOT.  Just because you can't feel it doesn't mean it's not burning you.

Can you give me the gist of the text in a nutshell?
<bot>: Had thick callouses on my feet and didn't notice hot pavement was giving me second degree burns and made half of my vacation agony.