Frenulum: A Man's Friend
The frenulum is a "hot spot" on the penis. It's the strip of skin just below the glans on the underside. The corona is another sensitive part of the penis.
Other erogenous zones common to most men include the mouth and tongue, ears, nipples, prostate (the so-called male G-spot), anus, scrotum, the spot between the anus and scrotum called the perineum, and the toes.