We have new-ish neighbours who moved in across the street a couple of months ago. On Friday, I dropped off a Christmas card at their house, and included a 'belated welcome to the street' message. Yesterday, the man came round and dropped off a box of chocolates and a bottle of wine. I now feel terrible that we didn't give them something more! 
DH says that we should now drop round a box of chocolates to theirs, but I say that he is BU - we can't give a card, get a gift, then give a smaller gift in return! Who is BU? Me, or DH? If the consensus is that I should give them the chocs, I will, but we need help adjudicating!