Dare Me Do

You thought we were gone. Oh no, we're just plotting.
And what's more, we need a hand.
Donal is, as we all know, well up for it. Daring I mean. He's going to do a dare.
A horrifically embarrassing, dry-mouthed, shocking dare.
But exactly what dare we do not yet know... as this is your job.
That's right - you have to tell us a dare.
One dare, a random dare, will win.
The only catch is he will be starting in London, and the challenge cannot take more than a day to complete, or cost him more than £100.
Get daring. Post them as comments here, or email them to knife@worldofwonder.co.uk