How am I supposed to respond?? I am baffled are they testing me, to see if I still hear voices?

Sometimes my therapist or other professionals from Mental Health will slip in an insult like you're a loser, quietly or make finger guestures that are vulguar like flipping me the bird while scratching their cheek???? Or other finger guestures.... Like are they testing me to see if I am overly sensitive and get offended at every insult? Or are they testing me to see if I'm still hearing evil voices who do the same things? Or are they really insulting me because they don't like me at all??? The thing is, is that they've all done this to me for Years and Years..!!!!! Starting with the first councellor who flipped me the bird and kicked me under the table! When I first turned to mental health back in like 2009!!! My psychiartist flipped me the bird, my social workers and nurses and therapists have all done the verbal slips...And I don't know whyyyy????? I like myself very much, so if they don't that's their problem... I just take it with a grain of salt, and let it go, but I was just thinking about it..