One of the great things about the Olympics is that you can find yourself watching sports you've never showed an interest in and getting inexplicably gripped by them.
That's exactly what happened to loads of people on Twitter when they started watching the fencing.
(Although not everyone was quite so drawn in...)
Maybe the appeal was because the competitors looked a bit ridiculous - like GB's Richard Kruse and his Union Jack face.
Kruse was beaten to bronze by Russia's Timur Safin - but he's earned his sport a whole new legion of fans (for the time being at least).