Have you ever written/thought about writing a fanfic on people you knew?

Oh my gosh, I have xD
Like, it was the greatest thing I did my senior year. They're best friends (both guys) since elementary, had almost every class together that year... they were adorable. Anywho, it was a smut scene. The first sentence went something like this:
"Their first kiss was electric."
And my best friend (girl) read it xD