when a male wearing boxers has his penis in a bad position then leans over and shakes a leg, thus having it fall down into one of the legs of the boxers.
Extremely happy, because one's goals have been attained, one's dreams have been fulfilled and because present happiness is expected to linger on and on...
He married his teenage love. He'shappy as a dog in a butcher's shop.
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