I heard this is when you push the ruler into yourself until you hit your pelvic bone because fat, even if it's just a little bit, engulfs the penis. I am a pretty skinny dude so I never factored it in but when I did it made me jump up a quarter inch, which could then be rounded up to a number I would really be happy with. Then again, measuring from the top that is not the truth so it'd be kind of shitty for me to cheat myself and others by claiming that quarter inch within me, lol. I just heard that lots of surveys allowed this and I'm wondering if the numbers might of gotten a bit skewed because of it?