A guy who has spent more time with men pumping semen into his ass and mouth than with his own penis inside of a woman. If he's very
dedicated and really gets "into it", he probably has "bareback" or
unprotected sex, which he prefers for the sensation of his partner's throbbing member rubbing against and
stimulating his prostate, which serves as his male g-spot, as well as the feeling of having his rectum filled with semen, which is known colloquially among gays as "getting bred".