your good deed for the day
(one's) good deed for the day
Some especially good, kind, or generous thing one has done. Sometimes used ironically or sarcastically to suggest that a certain deed is not good or not as good as someone thinks. Wow, so you went all the way across town to deliver the missing wallet to its owner? That's your good deed for the day! It's like the guy thought he was doing his good deed for the day by pointing out my mistake to me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
your good deed for the ˈdaya helpful, kind thing that you do: Why don’t you do your good deed for the day and cook me dinner?
Farlex Partner Idioms Dictionary © Farlex 2017