Shane Diesel

The reason I ask is because in every movie they are in, not only are they simply blessed with massive dicks, but their dick heads themselves always seem swollen.
I am talking about the type of swollen you typically get wearing a cockring. I am no mandingo or shane D...but I am almost 8" and 5.5" thick..but only if I am at peak arousal will my dick be so rock hard the head flares to its max...however when watching scenes with those 2 guys...their heads seem to be flared more then usual and longer (in terms of time) then usual.
So it makes me wonder if they are either
a. On a pill
b. Using some flesh colored/invisible type cock ring.
The tell/tell sign for me with Mandingo is that in every scene he is wearing loose baggy pants where the girl has to take them off and he is already 100% hard ready for the girl to start sucking...versus him getting his pants pulled off and the girl working him to get him hard..its like he has been wearing a cockring for a few minutes already to get himself nice and "plump".
Both are freaks (in a good way) and good for them for being blessed, but I would love to have a constant full/flared cock head like these guys..just doesn't seem realistic when going sans-cockring.
thoughts?