Hard lump under skin on penis. Here Are 10 Possible Causes. It happens when the lymph channels in your penis are temporarily blocked. Normally, they are bean-sized and can barely be felt at all. Due to this problem I cannot pull my foreskin all the way back over the tip of my penis MS in Women: It can be transmitted by saliva, body secretions or oral sex. I wash my private part with lots of soap, however, it still smells. Here's how to distinguish a penile pimple from other bumps and how to treat it. Scar on penis Q. Sexual health Wellbeing Lumps on my penis What are these lumps on my penis?