Originated from tara strong's twitter account in honor of Twilight sparkle, a unicorn who lives in ponyville, equestria. There is also a youtube video called "Twililicious" Synonyms: Good, awesome, twilight sparkle. Spike is twilight's assistant, which means spike is twililicious.
NOT to be confused with: Twilightlicious, twilight sparkle approved, pimpalicious, and gangstalicious (See: the boondocks)
Example 1: Tom: Hey bob, tara strong is twililicious.
Bob: Of course! She voices Twilight sparkle!.
Example 2: Purple is twililicious.
Example 3: If I don't get sued for copyright, that would be twililicious