Taken from the popular Twitch.tv phrase/emote "Kappa" which means you're joking. Was later shortened to "Cap" outside of Twitch with the phrase being picked up and popularized by influencers.
by CultureSucks April 15, 2019
Get the No Capmug. 
Another word for lying and used online and in real life… it’s mostly used by teenagers and kids at around the age 6-25
Person 1: Bruv, ain’t that Cap
Person 2: I’m being serious, I am British not American
Person 1: yeah right, your totally British, because they are legends
Person 2: I’m being serious, I am British not American
Person 1: yeah right, your totally British, because they are legends
by @Gmail God June 20, 2022
Get the Capmug. A word used by Graffiti writers, ;to be capped out
-when one writer goes over or marks a line threw any other writer..
-when one writer goes over or marks a line threw any other writer..
by uneek_78238 September 4, 2007
Get the cappedmug. by Fatnoob360 September 1, 2021
Get the CAPmug. by Og lewis November 25, 2018
Get the No Capmug.