Top definition
When a viewer of ABC's show LOST has sudden insight or moment of realization that has to do with the show. This epiphany can occur while watching the show, or at any other time. People who have just experienced a LOSTpiphany usually yell said revelation and jump up and down screaming.
*May contain spoilers*

1.
Person A: OH MY GOSH. HURLEY'S NUMBERS HAVE A PATTERN!
Person B: Stop it with your random Lostpiphanys!

2.

Person A: OH MY GOSH. (NAME) IS THE BLACK SMOKE!
Person B: NO ONE CARES.

3. HOLY CRAP! (NAME) IS NOT ABLE TO DIE!
by Payroo April 04, 2010
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