The customer is not always right, at least when it comes to indisputable facts:

“I’m sorry to bug you, but I can’t remember any of my passwords this morning.  Just seem to forgot all of them; it’s really a Monday morning so far.”

“Actually sir, it’s a Tuesday.”

“…dammit!”

I almost didn’t tell him, he sounded so sad.

It’s little tidbits like this that keep you coming back.