TMMR just means that someone is trying to say “tomorrow.” This type of exclusion to particular letters in a word is simply to add emphasis to the word itself. Someone might reply to a text with a question in it and simply say, “Tmmr!”
Intention: This would be telling someone a time and a place where something is happening. For some reason, the texter thought it was a good idea to say “tmmr” instead of “tomorrow.”
“Don’t talk to me until tmmr!”
Emotion: Anger
Intention: This person is expressing a little bit of frustration and using the “tmmr” to save a little bit of time on the keyboard!