So, I was checking out some of the "best of" craigslist tonight and found this post:

To the guy who had sex last night in front of my house

The "residential area 14" is a very specific part of austin. Then the picture (which I've edited and added below) looked VERY familiar. This happened in front the duplex my friend lives in. He denies writing it, and admits to wishing he was the author.

For now, the mystery remains. I have also eliminated toyotas from my potential new car list.