The Two Tonys

S4, E1: Dad's old friend from university, Tony, has been invited round. Dad used to live with Tony along with another lad also called Tony - who used to tell terrible jokes and talk with his eyes closed the whole time. Dad hated this Tony. But when a bad-joke-telling, shutty-eyed man appears at the front door, Dad almost has a heart attack: he's inadvertently invited the wrong Tony over.