Don't knock it

"That ... can't be right..."

I was watching the student cashier count out a pile of coins from the till for my change. The thing was, I'd given him $2 and my drink was $1.90. It might be first thing on a Thursday morning, but even I could work out that I shouldn't be receiving a fistful of silver coins back.

The cashier paused and looked at the till screen. It read:

Purchase: $1.90
Change: $0.85

"No ..." he agreed and then shrugged. "Just ... you know ... go with it." He passed me over the coins with a sunny smile.

"Um. Okay. Thanks." I took the coins and the drink and wandered off.

Probably a sociology student.