Banned for yeah. You just have to hit the sweet spot, and hit it hard.
I found my wife's sweet spot long ago. Essentially, I can get her off at any time, and she knows it, and she takes advantage of it, believe you me...
I'm a different story, though. It takes a LOT for me to get to that level. She likes working for it, though, so I guess we both win, even if it gets frustrating at times...