Bonk Bonk on the Head!

So I'm walking through the Library courtyard yesterday, past all the parked bikes. One fellow is clearly not having a good day.
He is swearing and cursing and yelling. His bike lock has jammed up on him and his bike is now possible permanently attached to the bike rack.
He's beating up his lock. He's pulling on it, pushing on it, hitting it, kicking it. Finally, as frustration talks his toll, he grabs his ball cap from his head and slams it to the ground.
Oh, wait.
It wasn't a cheap and flimsy ball cap he snatched from his head and threw to the ground, it was his bike helmet. An expensive bike helmet.
He stopped cursing.
A quiet moment of recognition and reflection.
And then, the swearing and yelling began anew.