Paddy and Mick are walking home after a night on the Guinness. It's too late for the buses and they've got no money to get a taxi. They stagger around the town and eventually find themselves outside the bus depot, locked up for the night. Paddy has a brainwave and says to Mick "Get in there and steal a bus so we can drive home. I'll stay here and keep a lookout for the police". Mick duly breaks into the garage and disappears for twenty minutes while Paddy is wondering what the hell he's doing.

Finally Paddy sticks his head around the door and sees Mick running from bus to bus and looking very worried. "What the hell are you doing Mick, get a move on!" to which Mick replies "I can't find a number 7 anywhere Paddy" whereupon Paddy, holding his hands to his head in disbelief, shouts "You idiot Mick, steal a number 9 and we'll get off at the roundabout and walk the rest of the way!".