You know how you wake up from a bad dream?

I just woke up in the middle of the night, without any memory on any dream, but rather two people talking to each other on discord.

All I can remember was:
A: (garbled) you know when you ALT+CTRL+SHIFT+G?
B: (interrupts the other) 1,2,3... yeah when you want to move the windows to the other screen?

Both started to laugh.

I fully woke up, got a glass of water and went back to sleep. I’ve never, ever used that shortcut in any program.