To Deck, To get decked; to hit or be hit viciously hard without mercy, usually in the mouth or nose region. To strike down upon another human with great vengeance and FURIOUS anger.
"I just deckedStephanie in the nose cuz the bitch didnt have my money"
"If my manager doesnt give me next friday off ima deck him right in his mouth
By Adda
Deck
To punch someone very hard, knocking them to the ground in some cases - hence "deck", to "deck" someone as in putting them on a deck.