આટા મ્હોં ઉપર ઊડે છે.

āṭā mhōṁ upara ūḍē chē.

Literally: Flour is flying onto the face.
What it means: Said when a clumsy attempt at work backfires and causes ruin or embarrassment to oneself.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.