Apparently my money is no good here...

The rest of the office is going in on pizza this afternoon and someone asked if I wanted to get in on it. Rummaging through my backpack, I managed to scrounge up a €1 coin, two £1 coins and 32 pence from my last trip across the Atlantic. So, I've got the equivalent of about $6 in hand, but they say my money's no good here. I did find 52¢, though - maybe I can grab half a slice along with the crew!