Abbreviation for: You Don't Know Shit About Boxing
Shortened version of the phrase coined by esteemed boxing trainer Roger Mayweather who used to it describe the lack of real boxing knowledge possessed by boxing journalists and fans.
Pactard : Marquez is a cheater, he is on PEDS!
Sane Person: YDKSAB, Manny got KTFO because he lunged in and got caught.
Trevon is a Tall, lightskin , and lovable person . But if you get him to his boiling point and will get very personal by saying things like " that's why you mom doesn't love you " but overall Trevon is a very nice person