A person most usually a woman whose primary reason for existing is to give males a comfortable place to rest their penis after a hard day's work i.e. a Kacy Osburn
Shawn is worn out from lugging around his giant cock all day he can't wait to get home and take a load off in his favoritecock receptacle, Kacy.
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi