You might be thinking of kapp or kappa, the twitch emotes used to call someone's bluff or accuse them of lying
Dumbass: "Yah dude and I was the best player they had. No one could beat me" Me: "kapp (cap), you were not" or simply "kapp"
by guest_2 December 7, 2019
 Get the capmug.
Get the capmug. The word used for someone who is socially awkward or someone who thinks they are strong. Commonly used as an insult
Person 1: I think that we should talk.
Person 2: no thanks.
Person 3: ok, you have sharp knee caps anyways.
Person 2: no thanks.
Person 3: ok, you have sharp knee caps anyways.
by Smartcatttt January 23, 2021
 Get the Sharp Knee Capsmug.
Get the Sharp Knee Capsmug. by Sahilvsam October 29, 2020
 Get the Reverse the capmug.
Get the Reverse the capmug. Its once they cheat so it is called CAP "Cheating ass patriots," once they win a game... once they cheat....?
by Ellia Fox February 15, 2019
 Get the CAPmug.
Get the CAPmug. A person who will never propose. Refers to the emotional inability to get down on one knee Not to be confused with eternally single; someone without knee caps will stay in long term relationships, but will never actually pop the question.
by CC Halpert  June 9, 2018
 Get the No knee capsmug.
Get the No knee capsmug. by Esco Tha Great January 29, 2019
 Get the Cap alertmug.
Get the Cap alertmug. 