ass : Idioms & Phrases
Asses' Bridge
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L. The fifth proposition of the first book of Euclid, "The angles at the base of an isosceles triangle are equal to one another." Sportive "A schoolboy, stammering out his Asses' Bridge." F. Harrison.pons asinorum .
Webster 1913
To make an ass of one's self
- to do or say something very foolish or absurd.