a disease that infects mostly males.
however, rare cases have been discovered among females.

males who have been infected are generally known as douchebags.
females, likewise, are known as douchebaguettes.

symptoms:
smart-ass comments at inappropriate times, lack of a significant amount of brain cells, sexual urges with people you just met, sexual urges with people you've always known, sexual urges with old people, a constant need of multiple sexual partners, a constant demand for sexual favors at inappropriate times, a need to publicly talk about recent sexual acts, a need to publicly provide evidence of recent sexual acts, and of course a blatant disregard for the feelings of the "partner-of-the-moment".
also, rare cases of herpes have indirectly resulted from this wide-spread disease.