nail Jell-O to the wall

and nail Jell-O to a cross and nail Jell-O to a tree

phr. to do?something that is totally futile. (Jell-O is a protected trade name.) You’re wasting your time. Trying to get him to do that is like nailing Jell-O to the wall.

Common Names:

Name	Pronounced	Usage
Osbert	AHZ-bərt	English (Rare)
Kristia	-	English (Rare)
Selima	-	Arabic
Viktoriya	veek-TO-ree-yah (Russian)	Russian, Ukrainian, Bulgarian
Noa (2)	no-ah	Japanese
Baptista	-	Late Roman