1, 2, 3, 95, 98, NT, 2000, XP, Vista, 7, 8, 10
----
Edit: I think I may be missing a version, but looking through the comments it seems no one else knows what it is either. I'll have to google it.
Many of the jokes are contributions from our users. If you find anything offensive and against our policy please report it here with a link to the page. We will do everything to make this an enjoyable platform for everyone.