Ok, back to the matter at hand so to speak.

As a Male I know I personally experience different levels of contractual completion. With the difference in My case being mental stimulation levels.

It seems the naughtier the location selected for the highly anticipated sharing of My joy, the firmer I attend to the goal of liquid release, allowing very concentrated efforts to fullfill the moment. Of course, the longer I was able to exhibit My resistence to the highly anticipated moment, the firmer I begin approaching the time to make the final decision, shall I share or not share, its a classic question actually.

Once I have decided to share, then depending as stated on the location to aim for, a much higher level of excitement ensues, causing the aforementioned harder contractions.

In other words, I cum a hell of a lot harder if I'm cumming in her mouth.......