An erection that lasts for a substantially long time, in other words a boner that will not go down. Can also be referred to a man's penis that is both large and can go for a long time.
Last week I woke up and had a boner that simply would not go down, my girlfrienddubbed it the "Hour Tower" after she used it.
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