This is very much the Linux version of the old tricking gamers to alt+F4 gag.

My favorite was when I was teaching a friend Squad, and we were in a vehicle. I explained you hit the F keys to change seat (which is true), so F1, F2, F3, etc. Noticing that seats 1, 2 and 3 were filled, I then told him he can hold down alt to swap seats faster. He then immediately quits the game xD