Yeah well that's not me... I've been on BBSes since 1988 and got my first proper internet shell account in 1991 when, incidentally, I was 13.
The reason I made the comment is because it rubbed me the wrong way to cite 13-year-old girl talk as prototypical gibberish. Are 13-year-old girls generally excitable and potentially annoying? Yes. Do they talk in gibberish as a matter of course? No, that's a thoughtless sexist trope.
And I'll place a blind bet that they text faster than you.