When manipulative people start pissing me off, I just remember that the word "manipulative" harkens back to the Latin idea of "handful," and a handful is really not that much.
I mean, unless you're talking about boobs, and then it is just right, no waste.
But a handful is not enough ice cream, not enough sand for a sandbox, not enough beer or soda or lotion or blanket or sandwich. It is just a little tiny bit.
I can handle a little tiny bit of a manipulative person just fine.
By stepping on them with my big feet and squishing them dead.