I feel after the first few bites, you'd be running on adrenaline.

At that point, I believe it's apt to start elbow-dropping, curb-stomping, and punting monkeys.

If for some unknown reason, 5 monkeys ambushed me on a regular walk, I'm confident I could throw enough of a fuss that'd dissuade them from trying to steal my lunch.

Now 10 monkeys? I don't know. That's a lot of monkeys.

I don't think I'm ever going to encounter 10 monkeys, all set on turning me into tartare.

However, if I were to have my jimmies rustled by 10 monkeys at the same time, I would put it at 2:1 odds that I survive without life-threatening injuries.

I would agree that you could dissuade a few monkeys from taking your sandwich. Animals don't particularly want to fight: even a "victory" could end badly if you live in a world without antibiotics, splints, or indeed any medical care.

On the other hand, if you backed five desperate monkeys into corner so that they think they are fighting for their lives, I think you'd fare much worse. I'd bet "punt attempts" sometimes end with the monkey clinging to your leg instead, chomping away at whatever they can reach (and even the molars can do some damage given the tremendous bite force).