The urge is the physical manifestation of the deep rooted need or incumbent desire to engage in homosexual activity.
It is often experienced as a tick or twitch in the hands, eyelid and in sever cases cramping of the toes. However unnoticed by most it can be a clear indication to those who experience it as well.
He suffered from the urge after going into the locker room.
The next chapter in Microsoft's desire to monopolize every aspect of electronics, right after their Xbox 360 console.