Something you can sit on, or an integral part of a seat (e.g. on a bus or train).

A small, rubber bag with a flap, used in a practical joke. The bag is filled with air and placed on a seat where the unsuspecting victim will sit; once he/she sits on the device, the bag deflates and makes a sound similar to flatulence.

A form of speed bump, often one of a series, that allows larger (especially emergency) vehicles to straddle them without slowing down

plural of whoopee cushion

plural of air cushion

A herb, the thrift (Armeria maritima) that grows in dense tufts.

Alternative form of pincushion

Alternative form of pincushion

(UK, dialect, idiomatic) A temporary seat made by two people crossing their hands.

plural of whoopie cushion