"Well," Gela says, after she's recovered from hearing 'sorry for shoving your head into a toilet', "There's not a lot you can do if somebody doesn't believe you. All you can say is you're sorry, and mean it, and then leave it be."

Not ideal, of course, but it happens.

She adds, "And then you never approach that person while they're near a toilet again, unless they get the wrong idea."