These are rather trivial but just thought I’d mention them:
I was playing a game where I ended up in minus figures moneywise. I then quit, but next time I went to load a game I noticed on the saved games list that the autosave from when I was playing and in negative money showed my cash in that game to be $-4-4-6.
I called a song something ending in an exclaimation mark (eg. OY!). When the time came for my band to complain that it should be retired, a band member suggested that I should retire the song “OY1”, replacing my exclaimation mark with a number 1.