I'm going out tonight for a family meal and for once I don't want all the humour to revolve around making fun of me. As gentle as the humour is, over the years I've realised when we all get together I tend to feel a bit ganged up upon (I'm the youngest, not sure if that's relevant). I don't mind a joke, honestly, but it's a regular pattern I've got fed up of laughing off. I don't want to spoil the occasion and certainly don't want to upset the birthday person, so any pointers on how I can politely stop any "joking" before they all get on a roll?