The time of night when everyone in a group has become so giddy and sleep deprived that everything becomes funny.
Everyone: *giggling over nothing*
Person A: Oh man, is it purple o'clock already?
Person B: Probably, let me check.
Person B turns to Person C and looks them in the eyes.
Person B (with a straight face): Purple.
Person C: *begins laughing hysterically*
Person B: *also begins to laugh* It's definitely purple o'clock.
Person A: Oh man, is it purple o'clock already?
Person B: Probably, let me check.
Person B turns to Person C and looks them in the eyes.
Person B (with a straight face): Purple.
Person C: *begins laughing hysterically*
Person B: *also begins to laugh* It's definitely purple o'clock.
by Bunny Rose January 28, 2019
Get the purple o'clockmug. Much like Beer 30, where people would drink beer at this time, Captain O'Clock refers to drinking spiced rum, such as Captain Morgan.
by Captain Jax Macky February 5, 2010
Get the captain o'clockmug. by AustinFromCanada July 27, 2020
Get the Dart O'clockmug. by 557getmyrefferencegoldeneye? December 4, 2017
Get the dusk o'clockmug. 

