Guys’ penises can vary in their shape, color, size, and the way they bend. It’s not unusual for a guys’ penis to curve sideways, up, or down, when erect – in fact, it’s considered normal. However, if your penis is curved and you have bad pain with an erection, or you’ve noticed any lumps or bumps in your genital region that you didn’t have before, it’s important to contact your health care provider and get checked out.