drop the ball
sin **
blunder
boob
goof

"Your father and I pretty much dropped the ball on our original project."

But the fact of the matter is he dropped the ball on this one.

Earlier in 2012 she said the Government had "dropped the ball" on the environment.

Everybody is watching to see if he drops the ball.

"It could not have been done if we had dropped the ball."

All I kept telling myself is, don't drop the ball.

But for everything the game does well, it takes something away or drops the ball.

"Because up to now, too many people have been dropping the ball."

Our government dropped the ball and must be held accountable.

"Seems like your people dropped the ball on this one, Jim."