What disturbes me most about this is him/her confusing gravitational force and weight, thus deviding mass (kg) through acceleration (m/s^2) an expecting to recieve mass(kg) once again.
So his result should be off by a factor of ~10,
if the rest of his calculations and conversions are correct.
There are so many errors. For instance, his penis volume assumes a perfect cylinder. He also uses an average weight and average density to determine a volume to compare it to a volume obtained in a slightly more direct manner. His error is likely larger than his measurement, making it completely useless. The whole last paragraph is utter nonsense; almost every word is wrong on all counts.
So his result should be off by a factor of ~10,
if the rest of his calculations and conversions are correct.