I hate (potential or not) buyers who never even take their time to read the description on my listings on other sites (Nobody's forcing them to read it quickly). Sometimes I do get tired of them asking the same question over and over despite said description is literally on my listings. Then there's lowballers, I hate it when they keep negotiate or lowball me with a much lower price than I listed it. Seriously? Why did you bother to negotiate/lowball me if you never read the description before PMing me.