My first encounter with Windows was 3.1 and it was a WTF moment.
Lol! Isn't it still? My first Mac -a Performa 640 "DOS" Compatible" - ran Windows 3.1. One of those computers only Apple could come up with. If I clicked a certain key combination on the keyboard, it would switch to Windows 3.1. That Performa is still in working condition, just needs a new battery.