like nailing Jell-O to the wall

(redirected from like nailing Jell-O to a wall)

like nailing Jell-O to the wall

Incredibly difficult or impossible, such that it could be seen as foolish or futile to attempt. (Jell-O is a trademark for a brand of gelatin-based desserts that have a soft, gelatinous texture.) Trying to have a reasonable debate with her father is like nailing Jell-O to the wall. Getting the kids to behave after a big party is like nailing Jell-O to the wall.
See also: like, nail, wall