haha, this reminds me of my own encounter with my (back then) toddler son... his hair was all over the place, and I had been pushing it forward for almost a year :) It was needed, and a friend offered to use the clippers so I didn't have to go to the hairdresser (as that was a terrible experience with his sister a few years before that lol) .. To my surprise the first time went awesome.. but the second time and every time after that was a drama... he went totally nuts even from the sound of the thing, when it wasn't even near his head.. I've had some oops moments with his hair too because of him moving his head suddenly :)
These things are hard in the beginning, but will get better eventually. My youngest is 2,5 and she still hates it.. So now I decided to let it grow longer, and wait a while before trying a hairdresser visit again..