Because mutiny on the Bounty's what we're all about
I'm gonna board your ship and turn it on out
A historical event commemorated in a Clark Gable movie, where the British naval crew of the HMS Bounty rebelled against their captain and took the ship for themselves.
The naval/pirates theme in this verse is extended to their rapping skills.
source: Jerome Rigaud via causeyoucantyouwontandyoudontstop
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