Survival mode

The lads at work today were talking about the epic confrontation of species they had seen online or somewhere, crocodile versus shark, gorilla versus jaguar and the such. This got me thinking of a topic raised on a forum I post on quite a while ago, which was something along the lines of 'How many 9 year olds could you beat up?'
Think about it, at first you would think it an easy task to beat up half a dozen nine year olds, but if you raised the number there will come a point where you would simply be swamped by the horde and torn to shreds. So how busy would a playground have to be before you would look at it and think, 'those kids would beat me to a pulp if they turned on me'?
My personal estimation is at about twenty five. I reckon I could take around fifteen in a head on confrontation and even up to forty if my life depended on it. The one thing you simply can't do is underestimate nine year olds, they may be small but it would only take one latching onto your leg to completely compromise your maneuverability, and then a moments hesitation could see you under an inescapable mass of fists and feet. My tactic would be to keep on the move and have them chase after me, outrunning the group would be easy while your stamina is up, as the pack spreads out as they try to cut you off and the more sprightly ones separate from the fatties you could easily take out the isolated opponents. Then when their numbers and down and their confidence has been lowered after having seen their comrades fall, I think you could quite comfortably could go berserker on the remaining opposition and finish them off before they get a chance to rally themselves. I briefly considered the possibility of the children taking a defensive stance and gathering together forcing you to make the first move, but by length of stride alone I think you could take out the ones on the perimeter one at a time faster than they can react.
So, employing those tactics I am confident I could readily take on a playground of approximately 25 nine year olds.