Entered verbatim - I couldn't improve on this:

A complex, subtle and violent game which emerged in Ysgol Morgan Llwyd school in Wrexham, Wales in the late eighties. It evolved from a game called "one touch" into "one touch death square" and eventually, simply "death square".

The rules are as follows: a tin can is kicked around within the perimeter of a 20 foot square of grass (we had an ideal one at our school, which inspired the game). Each player aimed to kick the can once, and once only, while forcing another player into a foul. Fouls included touching the can twice, allowing the can to pass between one's legs, or kicking the can out of the square (one could, of course, aim the can to hit someone and then bounce out of the square, for example, thus forcing a foul.) The penalty for a foul was to be subjected to kicks from all and sundry until one had exited the square.

The foul of all fouls, however, was for someone to catch the can in mid-air after one had kicked it. The penalty for this was a "Chicken Run" (ibid), where all players would gleefully line up in two parallel rows. The unfortunate offender would have to run between the entire length of the two rows while the other players had a chance to kick the hell out of them.

This was often made doubly difficult by the fact that many onlookers, who had been too scared, or apparently otherwise engaged, would suddenly appear from the furthest reaches of the playground to do their moral duty, thus extending the length of the Chicken Run beyond all reasonableness. A tactic which was sometimes used when taking a Chicken Run was to make a courageous, adrenaline-fuelled leap, attempting to long-jump one's way through the swathe of boots and legs (and, occasionally, fists) in the hope of landing at the far side unscathed. I seldom saw this succeed.