SH: What are you doing? Oh my gosh! You're doing it all wrong!
Me: I'm cutting my fingernails. Duh.
SH: Over the toilet? That's not the right way to do it.
Me: What's wrong with it?
SH: I sit at my desk and I very carefully clip them, not letting any of them fly away, then I carefully sweep the clippings into a pile and throw them away.
Me: My way is more efficient.
SH: It's not fastidious. My way is fastidious.
Me: I am not fastidious.
SH: I know. Oh my gosh! You don't even cut them right!
Me: What do you mean?
SH: I cut mine all in one piece, from one side to the other. You just cut little pieces off.
SH: My way, I get just one piece.
Me: You're nuts.