...Why don't you try this game:

I talked about it a couple of weeks ago whilst doing Scott's show. It's the game you play with a digital camera or camera phone or something and you pretend you're taking a photo of them but actually you're filming them. It sounds simple, but it can be VERY funny.

This one is brilliant - one of the best I've seen:

Try your own out and just email me the You Tube link...at greg.james@bbc.co.uk

Here's some more examples...