The book Voluntary Ejaculation and Male Multiple Orgasms (2004) goes into detail about ways to shorten or eliminate the refractory period.

Trouble is good, when they come in nice packages. ;D

A mix of functionality, comfort and sex appeal drives my bond with underwear. I love the easy of access in the jockstraps, the comfort of a great boxer. Not mention the fact that I have quite thighs so… helps me to avoid unwanted friction between my legs.