Example: My son had already made up his mind, and trying to change his decision was like banging my head against a brick wall.
Origins: Could not find one.
- hitting your head against a cement wall
- yelling at a brick wall
- sparring with a brick wall
- having a staring contest with a masonry wall
Discussion: I was really surprised that I couldn’t find an origin for this one, but I suspect it’s buried in some English garden. The meaning is apparent, without an origin.