TROLL : NOUN {IN FOLKLORE} A DISGUSTINGLY UGLY CREATURE DEPICTED AS A DEPLORABLE GIANT; A N D; SING {SOMETHING} IN A HAPPY AND CAREFREE WAY. "TROLL THE ANCIENT YULETIDE CAROL"; BE HONEST ... YOU DIDN'T KNOW YOU WERE TROLLING THE ANCIENT YULETIDE CAROL ... FA LA LA LA LA LA LA LA LA