The Easter Weekend Caption Competition was won by Anonymous, and a Co-Conspirator T-shirt is in the post to him (or possibly to her). You can buy your own here. Amusing wits can win one by making the best comment of the month and/or passing on the juciest gossip. If you are devious, but wish nevertheless to be admired for your wit and inside knowledge, you could buy one and simply pretend you won it.
However obtained, please wear them in an ironic fashion around parliament – it will make Guido laugh.