Who Needs Brakes?

Sometimes things are funny at the expense of others. I realize there are times when we really should not laugh but sometimes, no matter how hard we try, the laughter over powers us and there not a damn thing we can do about it.
Kemper, who is 3, recently got a new bike. It's bigger and goes a little faster than his old one. Yesterday, he was riding his it, back and forth, from one corner to the other. The sidewalk has a slight incline that goes toward the street on each of these corners. (AKA Corner of Horror) He has successfully rode this route until he got his new bike.
I was following him, pushing Mason in this little car thingy. We were approaching "The Corner Of Horror." I had told him to slow down so he'd make the turn. Just then he hit the incline and froze in fear. He began to scream, "Ahhhh Mooooommmmy!!" All the while unable to take his eyes off the approaching curb. My motherly reflexes kicked in, I pushed Mason's little car thingy onto someone's front lawn, and ran to save Kemper.
Unfortunately, my fingers just grazed the seat of his bike as he went over the curb. Screaming in horror. "Ahhhh!!!!" I could see every muscle in his little body tensed and could only imagine the look on his face.
Somehow, he manage to make it off the curb without tipping over. My poor son, still horrified, now screaming because he's in the road. "Ahhhhh Caaars!" (I have warned him about the dangers of cars and roads.)
He's still upright, on his bike, so I push him back onto the sidewalk. That's when it dawned on me. I had never taught him how to use the brakes. With his old one he'd just put his feet down. That's when I started laughing hysterically.
My poor helpless child.. screaming in fear.. as he went over the curb.. and there was nothing that he could do but hold on for dear life... because it never occurred to me that he didn't know how to use the brakes! I realize that he doesn't think this is the least bit funny and I shouldn't be laughing but each time I think about it, my laughter escapes me. What a way to learn about brakes!