I'll never forget the time a friend stayed the night and we spent something like 4 hours farming that sword. It finally dropped while he was playing, and he immediately went to swap it from Jeff to Poo and equip it.

Something caught my eye as he switched between character inventories though, so I told him to open the inventory again. As soon as he stopped on Paula's page, I confirmed what I thought I had seen a minute ago;

Another Sword of Kings.

And given its earlier position in the overall team inventory, that meant one had already dropped at some point, and we had failed to notice that until we farmed a second one...

We decided to get some sleep pretty soon after that.