(noun, plural, Brit.) Personalised registration plates on a motor vehicle that suggest to everyone but the owner that the vehicle's occupants are twats, chumps, or under-endowed fuckwits with all the charm and sex appeal of a road accident.

Adj. Something that is expected to have a long lifespan by virtue of having existed for a long time, based on the lindy effect, named for the New York restaurant Lindy's, coined by Albert Goldman and popularized by Nassim Taleb.