There's still muscle that can be built up (inside your penis), so I think it'd be able to grow, or at least thicken, until you're done muscling-up...
beachguy in thongs Reviewed by beachguy in thongs on . When does it stop growing..... down there? Hey, i was just wondering when a guy is supposed to be fully grown down there... i'm 16 and about 6 1/2, which im fine with, but i was just wondering when it usually stops growing. Rating: 5