Just this past week I had my fill of someone who's always come around to drag me down. Four days straight of telling someone to leave before they finally left. Four days...
Didn't feel good but I won't have that problem again. It's really no different than that type you described in the post. Probably thought me asking them to leave was that sign of weakness they prey upon and was getting a thrill before it finally backfired.
I've run out of patience for those types though and won't give them any space to work with. Same thing in life. I push them out. Of course in their mind that makes me the bad person but sometimes you gotta be bad.