In the days before cell phones, there was only one thing to do in a public bathroom…well, okay, only one thing you could do that wasn’t really really unhygenic: writing graffiti all over the walls. Thankfully, this tradition still exists today - and these are some of the best.
Also one time he was supposed to write a violin and piano duet, and he wrote the violin part, but he didn’t really feel like writing the piano part, or was too lazy etc. When the concert came up (he played the piano while a fiend played the violin) he set up a blank piece of paper (so people would think he was reading music) and improvised. After the concert he wrote it down so it could be published
Shoutout to whoever performed that overture with no practice.
That sounds like my level of preparation when I perform.