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The Britannica Dictionary

horse's ass

1 ENTRIES FOUND:

horse's ass (noun)

horse's ass noun

plural horse's asses

horse's ass

noun

plural horse's asses

Britannica Dictionary definition of HORSE'S ASS

[count] US, informal + impolite

: a very stupid or foolish person : ass

She angrily told him to stop acting like a horse's ass.

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