(n) Agents for the FEDeral Bureau of Investigation (FBI). Or, loosely, any federal agent(s) or agency, usually law enforcement related.
The feds broke dowm my grandma's door and stole her weed
(noun) a small, enclosed space in a recording studio (similar to Superman-style telephone booth). Usually used for recording vocal tracks, for separation (sound-proofed).
"Everytime I step in the booth, I spit the truth"