like trying to nail Jell-O to the wall

like trying to nail Jell-O to the wall

AMERICAN
If something is like trying to nail Jell-O to the wall, it is impossible or extremely difficult. Jell-O is a trademark. Trying to describe the party's policy on this is like trying to nail Jell-O to the wall. Note: Jell-O is a dessert that resembles ready-made jelly. This expression was first used by the American President Theodore Roosevelt in a letter to William Roscoe Thayer in 1915. He was describing the difficulty of negotiating with Colombia over the Panama Canal.
See also: like, nail, trying, wall