Yes, but I a true friendship you apologize as soon as you realize that you've gone too far and/or that it was an accident, if you think that constant fighting is a true friendship then you need to talk to someone. Also the sticks and stones rhyme isn't the truth. Ever heard the pen is mightier than the sword? Words hurt much more because they're psychological, it goes straight to your mind and the human mind is very powerful. If you're told all your life that your fat and worthless it can hurt you more than getting punched daily because you're brain will eventually say "Well if everyone says I'm fat and worthless, than I must be."