That plan is as useful as a screen door on a submarine.
screen door on a submarine
idiomSomething that is useless or absurd.
Origin
disputed originA screen door on a submarine would be absurd as it would allow the vessel to fill with water.
Trying to fix the leak with a piece of tape is like putting a screen door on a submarine.
The proposed solution was so fundamentally flawed that it proved to be as effective as a screen door on a submarine.
- 01
bang down the door
To present oneself as a strong candidate for a role or achievement, explicitly or implicitly.
- 02
big screen
Movies, or that which is related to movies or cinema.
- 03
close the stable door after the horse has bolted
To attempt to prevent a problem that has already occurred; to design and implement a preventive mechanism that is too late (after the first failure instead of before).
- 04
darken a church door
To go to church to attend a service.
- 05
darken someone's door
To arrive at someone's residence or location, especially as an unexpected visitor.
- 06
don't let the door hit you on the way out
Used as a command to leave in haste, or to indicate that one is glad, or at least unmoved, to see the addressed person leaving.
- 07
get one's foot in the door
To initiate contact or a relationship; to gain access, especially to an entry-level job.
- 08
get the door
To open a door to help another person to pass through.