Where/when: Cooper's Hill, Gloucerster, England: May
At the end of May's Bank Holiday weekend, hundreds of maniacs (many in fancy dress) flock to the westcountry to chase a big block of cheese down a lofty embankment. So if you're sick of staying in and watching the same old boring films on the telly, join the other brave (or foolhardy) folk and bounce your body down the steep slope.
Freakiness factor: Medium - Apart from scolding yourself with a cheese toastie, this must be the most dangerous cheese-related activity on Earth.