TL;DR

TL;DR means Too Long; Didn’t Read.
This abbreviation is most used when texting to respond to a very long message. It can also be used with any type of other activity where reading is involved.

Girl 1: Omg did you hear about how crazy today was? The teacher was being a complete jerk and didn’t accept my homework just because I forgot to put my name on it! And guess what!? Josh broke up with Emily because apparently her breath smelt bad. What a jerk. Emily was in the bathroom crying and eating her lunch alone. I felt sooooooo bad so I sat with her. You should’ve came today tho. It was sooo awkward because we had nothing to talk about and we all know that you’re the best when it comes to talking to people.
Girl 2: Sorry, TL;DR