S: What are the oysters tonight?
T: We have lots of oysters.
S: Lots of kinds of oysters, or just very many oysters?
T: (uncertainly) Lots of kinds.
S: OK. So… I’ll just name all the kinds of oysters I know, and when I hit on one you have, you tap your foot twice.
T: I’d need to go get a list.
S: Probably.