My older brother G. used to live right next to University of Utah. One night while I was visiting him he wound up having to go down the block to deal with a noise issue. Young presumably college guys were playing loud guitars from a second floor-over the side walk balcony. He did not go to tell them to knock it off, but rather so he could tune up their guitars for them. Imagine being young college guys thinkin' yer Rockin' out cool when some old(40ish) guy comes down the side walk, stops under your balcony and says "look, if you're going to do that, at least let me tune em up for ya boys" life is full of small, cool, yet humbling moments.
Just for fun, here's video from a friend of mine -
Back Porch Buddah - Neighbors