I'm not sure I want to explore that analogy too far... except to say that if you nick your "strop" during newb sex, you really might want to rethink your angle of attack.....
Anyway, I can assure you that there comes a time in every stropper's life when they step up, grab that strop, take a deep breath, and go hammer and tongs with semi - to fully - disastrous results. You'll nick it. It is not a matter of if, but simply a matter of when.
James.