A couple of MUNI cops ran a random scan on my train last night to ensure everyone was carrying a ticket. The lady next to me spent several minutes scouring her bag as they worked their way through the car and had emerged with two different transfers when the cops reached us.
“Ma’am,” said one of the cops wearily, “I’m going to need a transfer that’s valid for today, November thirtieth.”
“These are valid,” the woman insisted.
“You’ve got one here for November tenth, and it looks like another one for November twentieth.”
“Which makes thirty,” the woman said, triumphant. “Can’t you do math?”
They were still arguing when I left the train.