Chaar says:

When I had my Monroe pierced the same thing happened to me. I keep fiddling with it and it eventually fell of unsuspected which wasn’t good. It was the piercer’s left; so you’re right.
I also used my teeth to hold the bar on the inside of your mouth and the used a small bit of tissue to hold the outside ball so that my fingers weren’t slipping round the ball.
Hope it helps.

Lala :) says:

omg! i have the same piercing
and sometimes i have that problem when i wear the ball and plus my bar is really short so its hard
so what i do is put rubber gloves on and the rubber grips on better to the metal , its soo much easier
and to unscrew it , you have to roll the ball to your right.
go try it

Rachel says:

Try having someone else take it off for you. it might see weird to ask someone else to help with that but really it is easier if someone else does it cuz they can actually see what there doing.

paul says:

i usually recommend to clients to try a rubber band. some people dont have gloves or pliers but a rubber band is much like a rubber jar opener. most of the time this does the trick.