It could be osgood-schlatter's disease, it's a growth disease and usually you get swelling below your kneecap. I've got it but its not too bad anymore.
ehhhhhhhhhh. songs are too easy for the guitar cuz they are songs where the whole band can have a good part, which means every fucking song ends up just doing chords for 5 mins.
Go buy gh3.
http://www.youtube.com/watch?v=4pXfHLUlZf4
in case no one else had seen the vid that got to 13mil views in one month.
funniest vid ive seen in a while.