One of my favourite pranks that I remember myself was years ago when we were at school and convinced a mate of ours on a Saturday morning to get up for school. Also had a mate who was afraid of dogs and about 1am we arraged to be walking up a local lane near us were a mate was waiting, wrapped in a black rug and jumped out a my friend's legs barking and he took off like lightening up the lane and didn't speak to us for an hour or more.
Love many of the old Mike Murphy / Dermot / Fran parnks also but my favourite current day one would be Vitalyzd's Chainsaw prank:
So, what's your favourite prank of all time and have you ever pranked anyone yourself?