The thing I'm having trouble with is whether or not he's fully erect in that picture. I'm thinking that there has to be more to it lost in the depths of that mass of pubic fat surrounding his junk. I could see him having another inch or two of shaft buried under that hairy proto-gunt.
With a little exercise, healthy diet, and clean living, he could easily have a short but reasonably serviceable penis. But since it's Lucas we're laughing at here, he probably doesn't realize this and just spends his time blaming everything and everyone other than himself for his problems, including the laughably tiny junk.
And another thing. Why would someone ever post a picture of their dick, knowing how small it looks? Is he too lost in his delusions to feel shame?