PETA calls for MLB to rename outdated bullpen to arm barn - Sports

PETA called the term "outdated" and is pushing for MLB to rename it to
PETA called the term outdated and is pushing for MLB to rename it to 'arm barn,' a more animal-friendly term that also happens to be a vulgar slang reference.

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PETA wants MLB to rename the 'bullpen' to 'arm barn

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PETA calls on MLB to rename term 'bullpen' to the 'arm barn

Why is the baseball bullpen named as such? - Quora

PETA Calls On the MLB to Replace the Term 'Bullpen' with 'Arm Barn