no skin off teeth

no skin off (one's) teeth

No cause of concern or interest to one; no source of difficulty, threat, or risk. Hey, it's no skin off my teeth if you want to get a tattoo. I'm just saying that it's something you may regret someday. A: "Do you mind if I store some of my stuff in your garage for a while?" B: "Eh, it's no skin off my teeth."
See also: no, off, skin, teeth
Farlex Dictionary of Idioms.

no skin off someone's teeth

 and no skin off someone's nose
Fig. no difficulty for someone; no cause for concern to someone. It's no skin off my nose if she wants to act that way. She said it was no skin off her teeth if we wanted to sell the house.
See also: no, off, skin, teeth
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • no skin off (one's) teeth
  • no skin off (one's) back
  • no skin off (one's) nose
  • be no skin off (one's) teeth
  • be no skin off (one's) back
  • be no skin off (one's) nose
  • it's no skin off my, your, his, etc. nose
  • no skin off one's nose
  • it's no skin off my nose
  • no skin off my nose, it's/that's