Food. I love cooking, I enjoy the pleasure it brings to others, but actually eating bores the tits off me.
Watching other people do sports.
Also, this. Particularly football, I think it’s the sheer rabid incessance of it which does my gourd in, you can’t get away from it. Like, one lunchtime at work some bloke I’ve never seen before (or, thankfully, since) goes to me “did you see the game last night?!” Once I’d extracted from him that ‘the game’ he was referring to was football I said “I don’t follow football, sorry.” He replied “oh, no, me neither,” and then proceeded to talk at me about it for a solid half an hour. WTF?
I have dabbled, but it’s been with niche sports. I followed Manchester Storm (ice hockey) for a couple of years, went to matches and everything, until the novelty wore off. I watched American Football in high school, today I’ll watch the Superbowl but that’s mostly out of habit and generally a social thing with a mate or two.