And then there's The Bender. Where men should be concerned, says Shusterman, is if they have an extreme curvature to their penis — something in the range of 30 to 60 degrees of curvature. That's usually a sign of Peyronie's disease.
What is Peyronie's disease? According to the Urology Care Foundation, it's a buildup of plaque inside the penal shaft that causes the shaft to stiffen and bend. In a few cases, Peyronie's disease will go away without requiring professional treatment. But Shusterman recommends that if your penis has an extreme curvature when erect, or has an hourglass shape (where the shaft is thick then skinny then thick again at the tip), you should get it checked out and treated by a professional.