Sometimes I write "ha ha" so as to not be taken seriously. Texting often clouds the context and humor that face-to-face conversation has so I will make sure that people are aware I am being sarcastic or attempting comic relief sometimes. However, I don't use acronyms. I remember getting a message from a driver where I work and it took forever for me to work out what it meant: TIA (thanks in advance). This was many years ago and I still laugh about my confusion. Short cut talk only works when everybody has the code book!

Sometimes when not sure of meaning

I don’t understand half the acronyms used!