I think it is a scientific fact that if one is obese his cock is actually smaller than a person who has a lean athletic body. Reasons for this is that when a person is fat the fat constricts the blood vessels and that means that less blood gets to the penile tissues, remember that is how one gets hard, by the penile tissues getting engorged and thus becoming harder.
I am 30 kg overweight and I sometimes notice that while I masturbate my cock gets soft when I stop stroking, I think that maybe the cause of it.
Ofcourse my history with weight is pretty interesting. I was overweight when I was in elementary school but when I reached 8th grade I exercised a lot more and went on a good diet and lost weight, I was very athletic, this continued into 9th grade but as it came to a close I spent Grade 10, 11, and 12 including the first year of college being obese. I can't remember what my ejaculations were like when I was in 9th grade though, sadly
Any thoughts on this?