fall flat

Значение

to fail to have the effect that was intended

Не произвести ожидаемого эффекта.

Примеры

1. 1My joke about the long queue fell flat, and nobody even smiled.
2. 2The new menu fell flat with regular customers, so the chef changed it back.
3. 3The manager's big announcement fell flat; half the team didn't even look up from their laptops.
4. 4Don't be upset if your speech falls flat; wedding guests are often tired by then.
5. 5Why did the advert fall flat when everyone on the team loved it?

Грамматика

fall — неправильный глагол: fell, fallen. Подлежащее — обычно шутка, идея, план или речь.