Yes, my son was the same age when he did it, last school year. I was kind of mad, but not so much at him (even though I explained to him what he did was dangerous) but because he did this at school on the playground with a pair of scissors he found and the teacher never saw him doing it and claims she did not noticed that he had like 4-5 bald spots in his head, even though he obviously did not go to school like that.
So of course I had to call his teacher and we had a nice little chat, lol.
I wanted to cut it but dad thought a good lesson would be for his hair to stay like that until it grows back (so cruel) thank goodness his hair grows super fast.
You want to hear something worse. When my oldest son was little. He played barber and cut the neighbors hair! Oh was I upset!! Thankfully I had a very nice, understanding neighbor who just laughed and buzzed his hair. I don't think I would have taken it that good.