had a Honda 3 wheeler(same one that was in James bond) and absolutely burned the fuck out of my calf.

that was the last time mom let me ride it. still got a couple more rides out of it before she made dad sell it.

Similar here. I was like 10-11yo and another kid brought over a little 50cc bike. We weren't even doing anything "stupid" with it, and somehow I had a burn on my calf about the size of my palm that took a relatively long time to heal. The skin there was a different color for years afterward.

And, that was so long ago, and I've interacted with bike so little since then, I still couldn't tell you which bits get hot, just that some do so be careful.

My best friend in elementary school rode dirt bikes with his dad and bother. The first day we met he showed me a nasty scar he got from the exhaust pipe on his bike.

Burned my leg on my dad’s Honda. He picked me up from school and I happened to be wearing shorts.

I still have a piece of my eyebrow missing from when I had a little four wheeler at like 5 years old. I somehow managed to find myself under the thing while riding.

A while after I was washing it and shoved the garden hose in the exhaust, and that was the end of it