The prankster spent two hours inside his plastic prison as passing shoppers questioned: "Is this a wind-up?"
But apparently it wasn't.
His friend stated: "He ain't done nothing wrong, mate, he can walk around in a cone if he wants to."
A policeman eventually turned up and, with the help of another man, the prankster was freed to cheers by a growing crowd - many of whom were snapping pictures, recording video and laughing.
The policeman took the offending bollard away, saying: "Do you mind awfully if I have this?"
Sadly for him the whole ordeal was caught on film and has been put on YouTube...