The name given to a stumbled upon very wealthy looking village, the kind where every other house has a thatched roof and helicopters in garages are two a penny.
The kind of place where you know everyone has axminster carpets.
Wow, looks like we stumbled into cashminster - nicegaff m'lord!
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.