I actually did this once. My USB was on /dev/sda instead of sdb and I didn’t bother to check. It took me like 2 days to fix it because you can’t just delete partitions and start over normally, it changes some flags on your drive that you need to manually reset for them to be usable again. Fun times.
I know how you feel. I often find myself typing :w into notepad/word at work to save something. Or when I log into a machine that doesn’t have the vim extension in vscode I constantly type /something to search, only to realize that I actually wrote that in the file. Then using ‘u’ to undo just adds more characters and people look at me like I’m on some drugs. Just embrace it!
:wq