Cuajado literally means "curdled" or "set," like cheese or gelatin. However, in Mexican slang, it takes on a completely different meaning and is used to describe someone who is very muscular, rich, or well-established.
In the song, the line "este cholo está pero bien cuajado" means "this guy is really well-built/loaded." It's a fantastic example of how a common word can become colorful slang, painting a vivid picture of a person's status or physique.
GodFather is Fuerza Regida in pure, chaotic party mode. The track drops you right into the middle of a marathon binge that has already lasted seventy-two hours: "Ya van tres días que ando bien amanecido" ("It's been three days that I've been staying up all night"). There is no filter here. He mixes high-end designer gear—"Bien guapo de Dolce Gabbana" ("Looking handsome in Dolce & Gabbana")—with wild street habits, moving from glasses of whisky to cocaine ("un perico en cada fosa" [a hit of coke in each nostril]) and weed. He warns anyone watching not to start trouble ("No la hagan de pedo" [Don't make a fuss]), reminding everyone that he is rolling in cash ("un chingo de dinero") and carrying a sharp blade ("bien filosa la navaja").
The best part is the blunt humor baked into Mexican street slang. He imagines a girl arguing with her worried mother, who asks, "¿Qué haces con ese pinche tecato?" ("What are you doing with that damn junkie?"). Her defense? "Mami, este cholo está pero bien cuajado" ("Mom, this gangster is completely loaded with cash"). In Mexican slang, cuajado literally refers to curdled milk, but here it means someone who has made serious bank. The song swings between highs and lows—"a veces subo y a veces bajo" ("sometimes I go up and sometimes I go down")—yet he keeps boasting that "el Chuyin anda chilo" ("Chuyin is doing great"), having fun living dangerously.