Once in university I needed to write a simple program in c++ and upload it to online complier which would pass test inputs. It was homework, but I was bored during the next lecture, so I wrote the program.
On my phone.
Directly into the "paste" window in browser.
It wasn't comfortable at all, so I wrote everything in one line.
And got bonus points from lecturer later.
After some questions, ofc, like "wtf why everything is in one line"