blow one's own horn

blow one's own horn idiom
Also, blow one's trumpet. Brag about oneself, as in Within two minutes of meeting someone new, Bill was blowing his own horn. [Late 1500s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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