slap on the wrist

(noun) a very light punishment

Example Sentences:

A: Did you get in trouble for starting that fire?
B: Nope! I got a slap on the wrist!

The bank robber escaped with aslap on the wrist when the judge sentenced him to 10 days in jail.

From the Blogs:

Tobogganing On Duty? Slap On The Wrist

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