there are plenty of forums on the net with dudes discussing penis enlargement, posting pics of their dicks for other men to give comments on and so on. its kinda like bodybuilding, except straight men post and look at pictures of other straight men commenting on their dicks.
they have training programs just like in bodybuilding for beginners, advanced etc, before after photos too
look up "thunders place"
i was actually curious if this thing works, but it seems way demanding to keep up with a routine. i guess if i lived alone i could dedicate enough time for those training programs.