A root off of the old saying TLDR (Too Long, Didn't Read) or TLDL (Too Long, Didn't Listen). TSDC means Too Sentimential, Didn't Care or Too Serious, Didn't Care.
Used for situations where the other person is obviously really obsessed over something they believe you should strongly care about.
Girl: I love you so much! Please, I've been dreaming about the day we got a chance to be your girlfriend, and our first date and everything after that..
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.