Now, I've always "seen" Erdo Pete as a bloke (in his sixties, son !) bald, two nicotine stained fingers, 3 teeth in his head, about 5' 6" with a gnarly look on his face. A school of life graduate, Erdo Pete always knows someone to fix yer guttering/car/marriage probs/discount (knock off) goods - a type of Kenny Senior (phoenix nights) but who noses his way in to others conversations by saying "if yer asking me....(nobody did)".....then gives his sage advice and confirms it to be true by adding the phrase "I'm tellin' ya !" at the end.
Not that I've given this much thought.
Mate. I'm tellin ya.