Being somewhat of an avid “texter” two things always make me go “Hmmm…”
1. Words that have a relationship to one another that are spelled with the same keystrokes. For example, 5477 can be either “kiss” or “lips”. (It can also be “lisp”, which is even more funny.) 2625 is another interesting one, but you’ll have to try that one out yourself.
2. The T9 predictive text seems to make weird choices about which of the several words spelled with the keystrokes I am trying to say. Granted I seldom have to type the word “eels” but if I DO, it is much more likely that I want to type “eels” and not “delp”.