my mom got banned from facebook a month ago for having, months earlier, enthusiastically replied to a friend's post about some upcoming trip with a hyperbolic comment saying she'd "sell a kidney to be able to go with her". after helping her resolve the issue (had to clear all fb cookies, otherwise she was just presented with a blank page, making even beginning the unbanning process impossible), I warned her, next time, make sure you specify that it's one of your own kidneys that you're hypothetically willing to sell.

EDIT: found the photo my mom took of the ban screen https://i.imgur.com/VeA3Nz2.png