1) A way of stating that they're talking about something you know very well or agree with.
2) A way of stating that they're actually talking about you. (Often used as sarcasm).
1)
Ben: Punching hurts people
Frank: Tell me about it!
2)
Ben: Did you tell her about your "problems"
Frank: Being god-like isn't a problem
Ben: Tell me about it
used as an ironic acknowledgment of one's familiarity with a difficult or unpleasant situation or experience described by someone else.
"My car broke down on the highway in the pouring rain, and I had to wait for hours for a tow truck." "Tell me about it," my friend replied, sighing as they clutched their own dead phone. (Their sigh and clutching the phone imply they're also stuck in a difficult situation).
A common American phrase used to end a conversation due to time constraints. Usually used to be polite.
Friend: ... So after the movie we found the craziest thing in the alley.
Me (about to do something important): Sounds interesting, tell me about it later.
TikTok Farlands is a term to refer to videos that you see after scrolling for a long time. These videos can potentially be disturbing, or weird. Said videos can also have low likes, or low comments.