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A common phrase short for "Living in Lame Ass Lance Armstrong Land." This refers to a state of mind that fans of cheating athletes develop which blinds them from seeing how much of a douche bag their heroes really are.
Person A: Dude, did you hear that Manti Te'o's death was a hoax?

Person B: Are you living in LALA Land? Of course it was a hoax.
by Easy Kompany January 16, 2013