Over on the Cartoonists' Club of Great Britain forum, very occasionally we have a cartoon jam. Usually it takes the form of a comic strip where one artist draws a panel and then passes it along to the next cartoonist to do the next panel in the sequence. It's done 'blind' so that no-one sees the entire thing until it's finished. These panels are from the two I've been involved in. The strips tend to make quite a bit of sense when the whole thing is viewed, contrary to what you might think.
The other day we played another game. A kind of reverse caption competition, where we had to fill in the visual part to the joke using the caption, "I see you managed to get a sponsor in the end then, lads!" It's not really my kind of punchline, so I set out to pervert the competition by not allowing myself to show either sports or a sponsor. (I was the only one who took this obscure approach). I also decided to use some copyright free clip-art because I thought it added to the feel of the joke. It wasn't a wholly successful experiment, but I kind of like it.
And as a special added super-bonus to this post, here's my latest cartoon from Prospect magazine.