The other trick, aside from xroach, we would play on professors would be to take a screenshot of their desktop and re-display it as their wallpaper, with window

The other trick, aside from xroach, we would play on professors would be to take a screenshot of their desktop and re-display it as their wallpaper, with windows opened and all. To see a professor close an app window and still see it on the screen (from behind where it was) and to try over and over futilely to hit the "x" to close it on X Windows was a beautiful sight. It wasn't our fault professors typically ran "xhosts +" in order to make their lives easier. Source: my 25 year-ago mischievous self ... Sparc. Miss those days.