Text speak is very confusing for a lot of people, but it is one area in which children and teenagers are far more advanced than adults. Mobile phones and the internet are recent inventions.
Imagine what it was like for your parents as children. If your parents are 30 years old, the internet did not exist for them! Mobile phones were only invented in 1973 but did not become common for 15 or 20 years. The first ones cost thousands of pounds and were the size of house bricks!