fall flat (on (your) face)

to fail completely.

Most of her jokes fell flat and her act was a disaster.

It used to be an amazing magazine, but it's fallen flat on its face.

• on radar screen
• on record
• on safe ground
• on schedule
• on second thought
• on second thoughts
• on shaky ground
• on short notice
• on shoulders
• on side
• on sight
• on someone's account
• on someone's agenda
• on someone's case
• on someone's coat-tails
• on someone's doorstep
• on someone's good side
• on someone's head be it
• on someone's mind
• on someone's own head be it
• on someone's radar
• on someone's radar screen
• on someone's shoulders
• on speaking terms
• on spec