a mote in someone's eye

mote in the eye

A minor flaw or indiscretion. No, your sister isn't perfect, but at least she's never been arrested—her shortcomings are just a mote in the eye compared to your own!
See also: eye, mote
Farlex Dictionary of Idioms.

a mote in someone's eye

a trivial fault in someone which is less serious than one in someone else who is being critical.
A mote is a tiny speck of dust or a similar substance. The phrase comes from Matthew 7:3–5: ‘Why beholdest thou the mote that is in thy brother's eye, but considerest not the beam that is in thine own eye?’: the implication is that someone is ignoring a glaring fault of their own while criticizing a smaller one in someone else.
See also: eye, mote
Farlex Partner Idioms Dictionary
See also:
  • mote
  • mote in the eye
  • a beam in your eye
  • beam in (one's) eye
  • Excuse me for living!
  • Excuse me for breathing!
  • excuse (one) for (something)
  • excuse for
  • chink in (one's)/the armor
  • chink in one's armor