The curve is, in most cases, perfectly normal. If, however, sexual penetration is difficult or if having an erection is painful, then a urologist should be consulted. There is a rare medical condition called Peyronie's Disease that normally affects men between the ages of 40 and 60. This disease is characterized by a relatively sudden curvature of the penis. For the most part, however, a curvy penis does not represent a medical problem.
Penises come in a multitude of sizes, shapes, and curvatures.
Rather than being a problem, this variation makes life interesting.