Someone who posts on their girlfriend/boyfriend's wall to express their love in an inappropriate, sickly way, knowing full well that the message will appear on all of their mutual friends' news feeds.

Maybe for attention, maybe to make everyone feel bad because they are obviously the ultimate couple, but one thing is for certain; the world would be a better place if they just IM'd the damn message.

Can also be applied to close friends of the same gender who enjoy gaying each other up in public, despite being straight.

to sport a boner, fly the sail at full mass, rock hard, etc.