Season 4 Episode 2 - The Final Coutdown
(on an aside, I couldnt get in to season 1 - so started on season 2)
Moss: My mum always says, "You should never open the door."
Jen: What do you mean?
Moss: An unopened door is a happy door. So we never answer ours when someone knocks.
Jen: What, so you all just sit there?
Moss: Yes.
Jen: So, the doorbell goes and you all just sit there...until the person goes away?
Moss: Yes.
Jen: What if it's important? What if it's good news?
Moss: This is London, Jen. It's not someone with cake, unless that cake is made of dog poo and knives.