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
Konstancja	kawn-STAHNTS-yah	Polish
Sanjaya	-	Hinduism
Dubaku	-	Western African, Akan
Branwen	BRAN-wen	Welsh, Welsh Mythology
Antonius	an-TO:-ni-uws (Ancient Roman), ahn-TO-nee-us (Dutch)	Ancient Roman, Dutch
Ashlin	['æʃlin]