My absolute biggest pet peeve is condescension, and while I'm normally pretty softspoken and polite, if I'm manic the person offending me will get an earful about what I think of their attitude (and then some).
I don't like talking on the phone either. XD I don't know if that one has to do with bipolar or not, but I really don't like it, especially when I'm in hermit mode and don't want anything to do with people at all.
It irritates me when I get people asking me "Have you taken your meds today?" or telling me I need to calm down if I am legitimately angry or excited or in any way upset about something. I'm allowed to have moods like everyone else on occasion.
I don't like being treated like I'm fragile.
I don't like it when people turn discussions about their problems into the Oppression Olympics ("I'm worse off than you," etc). It's all hard to deal with some days, no need to go there.
I cannot stand repetitive loud noises. They actually make me angry and frightened. (This one is especially weird because I'm a musician, you'd think I could deal with that.)