lol rhetorical is right. A ton! He was generous with his booze and weed if he invited you over though (I didnt smoke, but I enjoyed his booze).
He had been longtime friends with the manager of the bar and partied together a lot during the era when Burton sang the national anthem at Jets games. Burton was "the Sheriff" and the bar manager was "The deputy". I remember a story where they went all night and Burton had an afternoon game. They got him to the arena and he was passed out in the green room, carried to the ice level and when it was his time to sing, he suddenly bolted upright, walked out, sang perfectly, walked back and passed out again.
He used to play for us at his home. And with the same gusto as a concert. Amazing he can still sing the way he treats his voice. Great guy though. Super nice. One time, I took my then-gf to his house and she was too young to know who he was but I was showing her around and she loved that I was excited. We get to Burton's bedroom (which was sparse save for a single bed and small TV in the middle of the room). We're sort of making out and Burton suddenly walks in, is surprised to see us, apologies for interrupting and leaves.