The animated film's title began trending on Twitter just minutes after the Oscar nods were announced after it emerged the motion picture - which featured the voices of Liam Neeson, Will Ferrell and Chris Pratt - had missed out on a nomination in the Animated Feature Film category.
The movie's director Phil Lord took the snub in good grace by jokingly taking to Twitter to post a picture of an Oscar made of Lego, but some of the movie's fans were clearly not in any mood to joke around and took to social media sites to vent their frustration at the film being rejected.
Ahead of the nominations being announced 'The Lego Movie' was a huge 1/4 favourite to triumph in the Animated Feature Film category, which saw nods for 'Big Hero 6', 'Boxtrolls', 'How To Train Your Dragon 2', 'Song of the Sea' and 'Tale of Princess Kaguya' instead.
But real-life actors and actresses also missed out on Oscars nods including Jennifer in the Best Actress category for her role in drama movie 'Cake', in which she plays a woman who becomes addicted to painkillers and becomes obsessed with the suicide of a female in her chronic pain support group.
Jennifer - who lost out to Marion Cotillard, Felicity Jones, Julianne Moore, Rosamund Pike and Reese Witherspoon - had said she wasn't going to wake up especially to hear the nominations for fear of disappointment.
She told E!: "I'm not going to torture myself. My phone rang yesterday at five o'clock in the morning and I was like, 'What's happening? Who's dead or b, is today Thursday?'
"I'll be in bed. I'll be in bed with my beloved and my dogs dreaming wild little dreams."
Several big names also missed out on Best Actor nominations including Ralph Fiennes, despite him picking up a BAFTA nomination just last week for his portrayal of concierge Monsieur Gustave H in 'The Grand Budapest Hotel', which received the joint most Oscar nods with 'Birdman', both picking up nine.
Timothy Spall was also snubbed for his titular role as an eccentric painter in 'Mr. Turner', which is up for four awards, while David Oyelowo was snubbed for a Best Actor nod for his portrayal of Martin Luther King Jr. in 'Selma'.
The pair both lost out to Steve Carell, Benedict Cumberbatch, Michael Keaton, Eddie Redmayne and Bradley Cooper, who has become the latest actor since Russell Crowe in 2000-2002 to be Oscar-nominated three years in a row.
But David wasn't the only member of the 'Selma' team to miss out on a nod as director Ava DuVernay wasn't nominated ether, with Richard Linklater, Alejandro Gonzalez Innirutu, Wes Anderson, Morten Tyldum and Bennett Miller all preferred in the Directing category.
There was also further disappointment for Clint Eastwood ('American Sniper') and 'Gone Girl' helmer David Fincher in the director section.
Foxcatcher's Steve Carell will have been delighted with his nomination in the Best Actor category, but the film failed to win a nod for Best Picture.
'Into the Woods' also missed out in the same category but Meryl Streep's portrayal of The Witch in the fantasy film ensured she extended her record as the most Oscar-nominated actress ever with a career total of 19 nods.
