Definitions by Veringebo

No cap 

No cap basically means "it's true". Comes from Twitch, where emote(emoji) "Kapp"(and also "Kappa") means a lie/fake.
No Kapp, bro - I'm not lying, bro.

I love you, no cap.
I love you, it's true.

No cap by Veringebo October 20, 2020