An Irish grandmother has gone viral thanks to a mischievous prank that helped bring back memories of her childhood. Eighty-one-year old Olive Smyth knocked on a door and ran away, just like she did as a child, while her son Mark filmed the whole thing. The ‘knick knack’, as it’s called in Ireland, seemed to go off without a hitch, despite Mark’s teasing.

https://www.facebook.com/mark.smyth.165" ; target="_blank">Mark Smyth gave further details about the prank in an article on the www.independent.ie/entertainment/banter/watch-mischievous-ir ; target="_blank">Irish Independent website. Credit: YouTube/Mark Smyth