So, last night I went to bed at 9pm because I'm lame. I had put my phone on my desk, where I put it every night. I woke up, did my business, checked the phone, and see that I had apparently sent a text at 9:23pm with the message "69" to some random number, and it had failed to fully send. Do cell phones do this? I mean, I just got this phone last month but it's still a pretty old timey one.
Maybe it was a random service code test thingie sent to your service provider? I'd check with them just to be sure. Also, turn off your phone for a bit. If it turns itself back on and starts doing weird stuff, then you got a Decepticon scout in your hands. Find the nearest lake and attempt to dispose of it there.
My phone sends dirty texts to my girlfriend all the time. What's weird is that her phone sends dirty responses back. I try to talk to her about it but we always wind up screwing like animals.
Your phone isn't posting messages to that one "if jcc'er x mated with jcc'er y" thread by chance, is it? Please tell it to stop.