a burr under (one's) saddle

a burr under (one's) saddle

A source or cause of intense and persistent annoyance or irritation. The traffic delays resulting from construction of the new inter-city tramline has been a burr under residents' saddles for months now. I'm not trying to be a burr under your saddle; I'm just ensuring we are following the letter of the law every step of the way.
See also: burr, saddle
Farlex Dictionary of Idioms.

a burr under (or in) your saddle

a persistent source of irritation. North American informal
See also: burr, saddle
Farlex Partner Idioms Dictionary
See also:
  • a burr in (one's) saddle
  • a burr under your saddle
  • bur
  • burr
  • saddle
  • be a thorn in (one's) side
  • be a thorn in your flesh/side
  • a thorn in (one's) side
  • a thorn in someone's side
  • a thorn in your side