"You 're telling me" - What kind of expression is this?

Solution 1:

  • May then I suggest the term colloquials.

    1. of or relating to conversation : conversational.

    2. used in or characteristic of familiar and informal conversation; also : unacceptably informal.

    3. using conversational style.

Example: the new coworker's rudeness soon began—to use a colloquial expression—to rub me the wrong way.

  • or if you may colloquial expressions CEs.

also: colloquialism, colloquy.