E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Taisez-vous, petite babouin; laissez parlez votre mère, qui est plus sage que vous. The tale or fable is this: A girl one day went to make an offering to Venus, and prayed the goddess to give her for husband a young man on whom she had fixed her affections. A young fellow happened at the time to be behind the image of Cupid, and hearing the petition, replied, So fine a gentleman is not for such as you. The voice seemed to proceed from the image, and the girl replied, Hold your tongue, you little monkey; let your mother speak, for she is wiser than you.