congrats on winning the nobel prize, it's hard to believe you're the same guy that crapped your pants in third grade — signed, your facebook troll
(trollus familiarus)  a friend or family member who posts immediately on your status updates with the (perhaps subconscious) desire to make you look like an idiot
"congrats on winning the nobel prize, it's hard to believe you're the same guy that crapped your pants in third grade — signed, your facebook troll" What is the definition of "facebook troll"?