Someone who T up for for their homies by any means, any time any where.
Tay is a Nooni Capper because he does what ever it takes to get respect on Nooni name by any means.
Someone known for their white lies. Usually by the name of Marcus.
That man right there is a capper.
some one who is being kinda homo
When that guy just got a seizure, he was being a capper!
A person who feels the need to constantly correct others, or prove their lies incorrect, also known as capping.
John was a big capper, barging into our conversation and disproving my friends story of him going fishing because that species didn't exist in the USA.
Person 1: "Oh, Syed said he'd come to workouts today"
Person 2: " hahaha that's hilarious, he's such a capper"
*Person 1 and 2 laugh for the next 30 minutes*