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.
And reining in popular culture - or, more precisely, the meaning of a particular piece of pop culture - is like trying to nail Jell-O to the wall. It's messy, difficult, and doesn't make a whole lot of sense.
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