Ed Byrne demonstrates the wearing of a woolly hat.
It's no joke being homeless in winter but starting from the premise that woolly hats are faintly comical, nine of our capital's finest comedy clubs are supporting St Mungo's by dedicating Friday night's shows to the cause and collecting cash. So, if you were up for a laugh on Friday anyway, stick a woolly hat on and stick some readies in the St Mungo's bucket to help change homeless people's lives for good.
See here for participating comedy venues.
Make a donation to Woolly Hat Day here.