What do you get stuck to the bottom of your shoe?

[saaby93]

Would you like to speak through the stuff on the bottom of your shoe?
http://www.bbc.co.uk/news/technology-21443206

Must be a slow news day

[craigjm]

certainly must be. They were on the Jonathan Ross show a couple of weeks ago

[Bonefish Blues]

I doubt I still have the necessary flexibility to use one.