I have a friend who, when i was miserable on a night out would grab my arms and whirl them around in a sort of tragi-comic imitation of dancing. I only mention this because i'm on my way to smooth b's party, and i'm really not in a party place. The man v. Christmas tree battle at my mum's really didn't help. At times like this you have to try at least to be open to a good time, and if not, try not to inflict it on too many people.