Kelly was famous as a "double-talker", someone who could spout gibberish but make it sound like he was actually saying something. He had long had a heart problem and was known to keep a bottle of nitroglycerin tablets with him in case he had an attack. One day he was with his friend
Milton Berle, who knew about his condition, and suddenly felt faint and passed out. Berle managed to revive him and asked, "Al, where are your nitro tablets?". Kelly, who actually did just have a small heart attack, was having trouble speaking, and said, "It's in the skirtleflum with the friggienaum." Berle said, "For Christ's sake, Al, not now!".