I guess vibrators dont exist in Japan. duct tape that thing on her inner thigh, put it on full blast and let her draw
Have you tried it yourself? Well, I once incidentally stumbled upon video with vibrator in everyday life testing. Girl said that after a while it's more of an annoyance then pleasure.
Excessive use of vibrators could cause problems. Ordinarily this wouldn't be a problem for the average user because the threshold to reach that point is kind of ridiculous, but if she's doing it as part of her work day, potentially for hours a day, that's where it might actually be capable of becoming bad for her. That video one of you mentioned where it was becoming more annoying than anything, she had had it on for too long at that point but still maybe hadn't done any significant damage. If it had actually started to hurt too, that's not good.
In other news, I can't believe I'm seriously discussing the logistics of like, sex toy overdose? Not really what I expected to be doing today but here we are.