ttid stands for "titter til I die", and since titter already stands for something that is funny, the word can be used for when you see someone totally doing something hilarious. This word is like an LOL and since that is overly used a new one like TTID can be used.
I love to ttid when my friend makes an awesome joke.
I was jumping on my trampoline with my friend Alexandra and all of a sudden she fell off, ttid!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.