The topic is Category: Nude portrayals of computer technology. https://commons.wikimedia.org/wiki/Category:Nude_portrayals_of_computer_technology
Before you click on this you probably want to make sure the boss is not looking over your shoulder and the kids are out of the room. This is not even a turn-on, in any way, it is just gross.
This is also a silly topic for a category, because everyone knows computer technology does not wear clothes at all. It’s just not what machines do. And these images don’t have anything to do with machines, either. In some cases these are just nude bodies with stuff written in magic marker. Yeech.
So here is the edit war. Today’s action centered mainly on attempts to add “Category:Sexual objectification” to the images, which makes as much sense as the other category, really. Also there were some attempts to add the description “nipple” to images with a nipple, while the two guys warred to remove any descriptions. It looks like they want people to think the images are something scientific, instead of just the usual gratuitous locker room stuff. Here is the edit history.