- adjective astonished, struck dumb, left open-mouthed in amazement. From gob. These are originally Liverpudlian terms and are now widespread, used even by Sloane Rangers and yuppies, thanks initially to usage on TV comedies set in Liverpool. The expressions enjoyed a vogue in popular speech and journalistic use from 1988. The phrases originally referred to a victim gaping after literally being punched in the mouth.