avocado o'clock Share definition Flag The late time of night during which the word avocado is funny enough to elicit laughter A: Wow, it's late. What time is it? B: 4:30. A: Is it avocado o'clock yet? B: Avocado! HahaHAhaHAHah avocado o'clock by ch1r0nex December 28, 2010 Get the avocado o'clock mug.