The comedian's jokes didn't land; they just fell flat
We tried to surprise her with a party, but the plan fell flat when she found out early
His attempt to impress the boss with a PowerPoint presentation fell flat
The new marketing campaign was supposed to be a hit, but it fell flat
She practiced her speech for hours, yet it still fell flat in front of the audience
The actor's dramatic monologue fell flat because he lacked conviction
Hoping for a standing ovation, the musical's final number fell flat
His excuse for being late didn't convince anyone; it fell flat
The restaurant's highly anticipated new dish unfortunately fell flat
Despite all the hype, the movie's ending fell flat
I practiced my presentation, but I worry it will fall flat.
Just be confident; your ideas are strong and clear.
I hope so, I really want this to succeed.
The comedian's jokes continued to fall flat
The comedian's jokes elicited no laughter
The audience did not respond to the comedian's jokes