Those darn physicists

"I need my stick!" my chemistry prof exclaims. He is talking about the three-foot wooden dowel he uses to point at the projection screen. "Those darn physicists have taken my stick!"

The physics major in the front row chuckles.

"You should take something of theirs!" a feisty voice calls out from the back.

The prof grins. "I should," he agrees, searching the podium for something else to point with. I smile. This kind of rivalry is fun. I wonder if this spirit of fun is what sustains other rivalries, like the Ducks and the Beavers, to use an example now ubiquitous in my world. I'd like to think I've discovered an emotional commonality with a huge portion of the world, but I'm not sure if it's the same thing.