Moving one's body in vivacious manner, such that those around you believe it to be a sincere expression of joy, but your true motivations are to sow discord and mock the entire event.
"Patrick had a great time at the concert last night. Did you see him dancing?"
"Nah, that was troll dancing, bruh. He hated it."
n. software that is no longer sold or supported by the original publisher / developer, often found as free downloads on the internet because it cannot be obtained elsewhere. Not legal, but often seen as morally acceptable because the company that made it is no longer selling the title, nor releasing it as freeware, therefore abandonware is "keeping the gamealive", so to speak.
Doom II is not abandonware because idstill sells it, while The Incredible Machine is not sold, therefore is abandonware.