"Do me a solid" means doing something helpful for a friend. (I'm going off of Urban Dictionary definition, which I assume is accurate).

What would be a good colloquialism to describe the opposite of that phrase? E.g. a friend (someone who you expect to do you a solid) does to you something unhelpful or worse.

  • 2
    "Eff you over," most likely.
    – Gnawme
    Jun 23, 2016 at 23:41
  • 1
    He dissed you. Basically, it's a casual verb of disrespect, but much more versatile. But please add a fill-in-the-blank sentence, so you get answers and not just opinions.
    – Phil Sweet
    Jun 24, 2016 at 0:08
  • The obvious one is 'betray', but not really a colloquialism. Jun 24, 2016 at 2:04
  • "Did me a dirty" or just "Did me dirty" fits the style and tone.
    – The Nate
    Jun 24, 2016 at 5:12
  • Obviously, he did you a liquid. And it was a gas.
    – Hot Licks
    Jul 21, 2016 at 1:26

2 Answers 2


There are a variety of such phrases, just as there is a spectrum of severity of the dirty deed.  A fairly mild one is he went behind my back:

to do something that is kept a secret from someone affected by it.

Or he upstaged me:

To divert attention or praise from; force out of the spotlight: a vice president who repeatedly tried to upstage the president.

A somewhat more severe one is he pulled the rug out from under me:

to suddenly take away important support from someone: The school pulled the rug from under the local team by making them pay to practice in the school gym.

The harshest one that that springs to mind is he stabbed me in the back:

to betray someone
to do something secretly to harm someone: A lot of women in this business think they have to stab each other in the back to get ahead.

  • "upstaged" definitely doesn't fit. "stabbed in the back" seems closest. Thanks!
    – DVK
    Jun 26, 2016 at 13:24

He did me a disservice


: something that harms or damages someone or something

full definition: ill service; an unhelpful, unkind, or harmful act

  • This is somewhat correct in meaning but not quite what I'd call a colloquialism?
    – DVK
    Jul 21, 2016 at 1:28
  • @DVK ~ may not be exactly what you're looking for, but it'll help others who search for a similar question. I've heard the term used plenty of times and while it's not slang it still falls under colloquial I would say (I'd even go so far as to say it's more standard usage than the above overly-dramatic examples. To stab someone in the back sounds like something a sitcom would use).
    – user180089
    Jul 21, 2016 at 1:31

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