Crack In A Cup 

Coffee or a heavily caffeinated drink that give large bursts of energy, commonly used in areas of incarceration.

Homie 1: "Ayo bruh whatchu drinkin'?"
Homie 2: "Man I'm gettin' my expresso on dawg."
Homie 1: "Nah fuck that man, you drinkin' that crack in a cup."
Homie 2: "man you trippin bro..."

Crack In A Cup by Lin-axepkheat May 15, 2019

crack in a cup 

When describing a drink one may find delicious, it is common in some areas to say "that shit is like crack in a cup".

Yo, that blueberry pomegranate juice is like crack in a cup.

crack in a cup by StrangeTownKlown February 28, 2016