ass in a lion's skin

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ass in a lion's skin

A blustering fool. The "ass" here is a donkey, trying to portray itself as a strong and powerful lion. Can you believe the boss yelled at me because he thought—wrongly—that I'd handed in my budget late? Geez, he's such an ass in a lion's skin!
See also: ass, skin
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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