Duct tape always worked for me.
if you had to work with someone who couldn't stop talking about themselves for a moment only pausing to draw a breath every attempt to make it known to stop talking fails?
If they don't understand polite put-offs, sometimes you just gotta say what's on your mind to shut them up. Nobody does it better than Leroy Jethro Gibbs whose standard response is, "I'm not interested." Try it.
Oh my goodness, that's a hard one. I'm terrible at being blunt with someone, unless I get my temper stirred up. At that point, I'd just tell them exactly how tired of their voice I was. I'd try everything else, in a nice way, first... I hope.
Yes. It was difficult to work with her. It was like every thought in her head came out thru her lips. Eventually, she was fired for not performing her job....,because she was talking and not working.
"Sorry, can't talk right now I have work to do." And then walk off to do work.
That would annoy me.