Schrödinger's Can

A beverage can that has been open for days and may or may not have a bug in it. You can't see into the can to get a clear answer, therefore the can simultaneously does and doesn't have a bug in it until you pour out the whole thing and see for yourself.

"I wouldn't drink that, man. It's been out for a while. It's a real Schrödinger's can at this point."