wash a brick
wash a brick
To do or attempt something futile. That couch will never fit up the steps—tell them to stop trying to wash a brick!
See also: brick, wash
Farlex Dictionary of Idioms.
- brick in
- brick up
- wash out
- washed out
- washout
- have a brick in (one's) hat
- be shitting a brick
- regular brick
- lost in the wash
- sponge down