Puffball
An open trigger word. You feel all of your strength melting away as your body slumps down into trance; loose and utterly limp.
Help! My Girlfriend Wants To Fuck My Butt!
Your girlfriend wants to do anal on you, but you are not a fan. She is so insistent it comes to a brief physical struggle, which you easily win. And then she turns your world upside down. Hypnosis, butt-fucking and brainwashing ensue.
No, I'm not letting go of the toy! Pshh!
Heh... then you won't let go of me?
Aww, well, I guess there's only one thing I can say to that.
Puff-ball.
That's it. Feel all of your strength melt away.
And slump down.