English is a weird language. We say some of the strangest things that make sense to some and are complete lunacy to others.
Cases in point:
Look at you!
What it means: "I'm impressed with you!" (I could be impressed with what you're wearing, how you did your hair, your makeup, something cool that you did or made, etc.)
What I think when I hear it: "Can I use a mirror? I can't exactly see myself, unless you're OK with me just looking at myself from the shoulders down."
I feel you.
What it means: "I understand and can identify with what you are saying."
What I think: "Get away from me!"
I hear you.
What it means: "I understand and can identify with what you are saying."
What I think: "Well, that's a relief! I was worried you had hearing problems."
I know, right?
What it means: "I completely agree with what you just said, and I wish more people understood that."
What I think: "No, you're wrong. You don't know."
LOL
What it means: "Laughing Out Loud", or more accurately, "I find this amusing to some degree, and I may or may not be making any noise at all."
What I think:
Misuse of "literally"
For example: "I literally died."
What they mean: "I was very impressed/appalled/starstruck/had some other strong emotion"
What I think: "Literally? If you literally died, and you're talking to me now, you must have resurrected. It's a miracle!"