It must be painful to be you - being the smartest man on the planet - and having to deal with peons like me who drop their beloved mobile phones in parking lots.
Clearly, your special telepathic powers allowed you to tap into the worldwide resources of cellular devices without checking if anyone carried what I need in the 3,000 mile radius of where we stood prior to you blurting out, "I can't help you."
So, I bowed to your genius and left the store, waited for your donut break, and then returned to ask your colleague who was, not surprisingly, more helpful than you.
I retract the donut joke because that's not nice. You were probably out curing cancer with your phenomenal brain instead.