A person who's profession is being slumped. A Slumpdog Millionaire can be found passed out anywhere and everywhere at anytime. A Slumpdog Millionaire is more often than not slumped due to large quantities of marijuana.
*5 minutes into a movie*
Chris: "Is Luke already passed out?"
Ryan: "Yeah dude, he's Slumpdog Millionaire."
"Sam is Slumpdog Millionaire after that last dab."
"Dude I'm Slumpdog Millionaire after that 8 hour shift."
Synonym for nutty
Crazy, bonkers, wild
Ryan: "Dude last night Luke beer bonged 15 beers, smoked 3 joints, and still woke up for his soccer game at 8 A.M!"
Cord: "That's nutto."
"Brah that powder was nutto!"
"The movie Fight Club is so nutto."