Always on like the refrigerator, I’m plugged in, ho, you know it

from Rocko (Ft. Future & Rick Ross) – U.O.E.N.O Lyrics on Rap Genius

Meaning

His style is always “on” like a fridge — as you can always guarantee the fridge won’t be shut off in any home. Thus ensuring freshness. “Plugged in” refers to his having a “plug,” or wholesale drug supplier, at his disposal. It could also describe the experience of having taken MDMA.

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