I have this head canon where Aang kept making jokes on his death bed. He would almost say the punchline, and then pretend to kick the bucket. Everyone would cry and start mourning for a few minutes before Aang would wake back up and finish the joke. He kept doing that until he started another joke and actually passed away before finishing the joke. Everyone kept waiting for the punchline an awkwardly long time before they’d realized.
Tenzin really, really wants to hear the end of that joke.