I actually have a new most hated type in the gym thanks to an "encounter" today. I'm happily running along on the treadmill minding my own business (and enjoying some Queen) when someone is apparently having a seizure trying to catch my attention to take my headphones out, so being relatively polite I decide to do so as they clearly have something important to say. She goes "eh can you move, I need to use this treadmill" eh?!? excuse me no you don't "NEED" to use this one, I tell her that there are numerous other treadmills she's free to use, she goes to reach for the stop button while saying "naw, me and my mate need to be beside each other", just before she gets to the stop button I warn her that pressing that will end badly for all concerned. The supervisor who was just behind me walks up and asks me to stop the machine a wee second then ripped into the bint asking just what the hell she thought she was doing, that could have injured me if I was unprepared for such an action and she had no right to do so!
Bint then goes on "I'm in here this time every Tuesday!" to which the audience who was now watching disagreed, she bitched, said I was being an arse and went on the bikes instead with her mate, 15 minutes later she buggers off. As I'm signing out the staff were apologetic, turns out that she was actually a regular in the local authority facilities in the next town over but that she's got previous there for being nippy!