burn (one's) fingers

burn (one's) fingers

To suffer an unpleasant or ruinous consequence (especially the loss of money) for some action, often such that one becomes unwilling or reluctant to do it again. During the boom times, countless would-be investors put everything they owned into shady investment deals, and most of them ended up burning their fingers badly.
See also: burn, finger
Farlex Dictionary of Idioms.

burn one's fingers

Harm oneself, as in I'm staying away from risky stocks; I've burned my fingers often enough. Some believe this expression came from a legend about a monkey who gets a cat to pull its chestnuts out of the fire (see cat's paw); others hold it is from an English proverb: "Burn not thy fingers to snuff another's candle" (James Howell, English Proverbs, 1659). [c. 1700]
See also: burn, finger
The American Heritage® Dictionary of Idioms by Christine Ammer.

burn your fingers (or get your fingers burned/burnt)

suffer unpleasant consequences as a result of your actions.
1998 Times An American buyer remains a possibility, although it is not entirely clear why any would want to risk getting their fingers burnt twice.
See also: burn, finger
Farlex Partner Idioms Dictionary
See also:
  • burn one's fingers
  • burn your fingers
  • get (one's) fingers burned
  • get fingers burned
  • get your fingers burned
  • get your fingers burnt
  • have (one's) fingers burned
  • come to a bad end
  • come to a bad/sticky end
  • here we go again