He wants his innertubes changed. He's had the bike for two years and hasn't done a bit of work on it himself, having never owned one and having never had to lift a spanner in his life, he's always asked me to sort it for him. Up until now I've not had a problem, we all have our strengths and his are not DIY or anything mechanical. Mine are.
But I hate changing innertubes. It's a pain in the arse. And yanky. And I'm fat and pregnant and not in the mood. So I said no, and directed him to a tutorial on youtube 
He's now talking about taking it to the bike shop in town and being charged £20 in a way that's supposed to change my mind. It's not!
He said if the roles were reversed and I asked him to carry lots of stuff to the garage for me (like yesterday...) and go into the loft (also yesterday) and clean the carpets (last week) and he refused, when I can't do those things myself, I'd have every right to be annoyed about paying someone to do it. Hmm.
I told him I'm posting this AIBU. He said go ahead. Over to you.