You could just text normally. But hey, kids shall be kids!
I'm just messing with ya. First off, welcome to the forums! To answer your question, I believe you can go to your settings and add words or in this case, abbreviations, to your dictionary. Some phones have the capability to add words while your actually texting.
The pictures shows what I mean by the "adding words to the dictionary straight from the keyboard" function. I don't what you would really call it, so I made up my own non complicated explanation. Or maybe its complicated. :b
In trueness, hope this helps ya.
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