My good friends Daisy, Tess and Orla came round to make some YouTube videos recently, and we started out with a game of the classic Speech Jammer app. This is available for most smart phones, I downloaded it on my iPhone.
Basically, what the Speech Jammer does is delay what you are saying by a very small amount, so that when you are wearing headphones, it makes it all rather difficult to talk without sounding as if you are a little bit drunk - or very drunk in our case. See what you think of our challenge, and maybe download it for yourself and give it a go - it's really tricky!