Yep!
After she has so many, and you know you held back too long, and she is soaked, sometimes you just squeeze the PC - flex a few times, grunt real good slam it in all the way and bam!
For me it isn't only about gettin off, as long as she is wore out I did my job, and I'm happy.
But not very often, I mean unless you were caught flat footed and practiced self release with bad timing. I wouldn't want to leave her thinking she didn't satisfy me.