4:30 Funniest moments: Tom Gleeson roasting contestants | Hard Quiz 3:06 Teenage WWII tank expert nails quiz show | Hard Quiz 3:31 Is this the most unprepared contestant ever? | Hard Quiz 3:05 Funny contestant has a comeback line for everything | Hard Quiz 3:13 Quirky contestant looks like he's from history | Hard Quiz 3:16 Biscuit-obsessed accountant steals the show | Hard Quiz 12:57 Extremely Difficult Trivia Quiz - Dare to try?