In modern slang, "cap" means a lie or falsehood. To say someone is "capping" means that they are lying or exaggerating.
The use of "cap" in this sense is believed to have originated in the southern United States, particularly in African American communities.
One theory is that it may derive from the word "capping," which in the 1940s was used to mean "to top" or "to surpass," often in the context of boasting or exaggeration. This evolved into meaning "to lie" or "to exaggerate" over time.
The term gained widespread popularity through its use in hip-hop music and social media in the late 2010s.
The use of "cap" in this sense is believed to have originated in the southern United States, particularly in African American communities.
One theory is that it may derive from the word "capping," which in the 1940s was used to mean "to top" or "to surpass," often in the context of boasting or exaggeration. This evolved into meaning "to lie" or "to exaggerate" over time.
The term gained widespread popularity through its use in hip-hop music and social media in the late 2010s.
He said he could run a mile in five minutes, but I know he's capping." (He's lying or exaggerating.)
by JayaMoss8819 June 4, 2025
Get the Capmug. by Copy of Gargoyle December 3, 2024
Get the Capmug. 
by Zakkerman September 19, 2016
Get the Put the cap on the markermug. by Troller32 February 8, 2021
Get the Captain capmug. A protective sleeve made to go over the "jack" of instrument and other cables to keep them from getting damaged and to maintain sound quality.
I just picked up a new guitar chord and it came with Jack Caps for each end.
Wow, my chord is coming apart at the jack, I wish I had some Jack Caps to keep that from happening.
Wow, my chord is coming apart at the jack, I wish I had some Jack Caps to keep that from happening.
by Picker's Plus July 18, 2016
Get the Jack Capmug. 