So which is your favourite video clip online which has gone viral?

For me, I’m rather tickled by the famous dog-chasing-deers-in-the-park episode, with the frantic dog-owner running helplessly after his errant hound in Richmond Park in London, shouting ‘Fenton!’

We each have our own, but of late there has been a coffee shop phenomenon which has gone viral.

Have you seen it?

It was uploaded on 5 April and all has to do with the pranks of Rich Ferguson.

What did he do?

He managed to kit himself in an outfit that looks alarmingly like an easy chair when he is sitting down.

He stationed himself in the Kreuzberg Caff in California and waited for his victims to sit on him.

Once they did, he terrified them by moving and talking to them, startling the customers to leap in the air, jump and tremble at the shock.

The whole prank was filmed and has been posted on You Tube.

Since it was uploaded, there have already been over one million viewings of the prank.

Apparently, the stunt caused so much merriment that one girl who was subject to Ferguson’s prank was so impressed that she brought her own brother back to the cafe to be similarly set up.

Would you fancy doing this sort of prank?

Anyone you would especially like to catch out?

What would you do?