Acronym for Constipated Overrated Out-of-style Loser. Often used to subvert people's expectations by calling them COOL first, and then informing them what it stands for.
Person 1: You're COOL
Person 2: Thanks man
Person 1: Constipated Overrated Out-of-style Loser
Person 2: shit man why'd you have to do me like that
Person 2: Thanks man
Person 1: Constipated Overrated Out-of-style Loser
Person 2: shit man why'd you have to do me like that
by legally stupid April 16, 2022
 Get the Coolmug.
Get the Coolmug. by hip.sartorius.15 November 20, 2019
 Get the no fools we’re coolmug.
Get the no fools we’re coolmug. Sofia 😎😎 she coooooolll asssss
by Jessie_2007 April 23, 2022
 Get the Coolmug.
Get the Coolmug. smooth, chilled, unsalted (not salty), creamy, spreadable, non stick, can add flavor in any situation
by NWM-FPS-19thFloor September 29, 2022
 Get the cool as buttermug.
Get the cool as buttermug. Something you aren't.
by TrollFace Gameing January 7, 2021
 Get the Coolmug.
Get the Coolmug. by 509-919-7630 November 16, 2020
 Get the cool dude dogmug.
Get the cool dude dogmug. by I simp for 2D men July 3, 2020
 Get the Cool Beansmug.
Get the Cool Beansmug.