I do keep my ears attuned for little snippets of dialogue that can spark a scene or be used down the track.
Heard high school kids, probably around 15-16 years old on the bus today:
"But isn't he like 20?"
"Why would she fuck that?"
"Well, if he wasn't fucking her he'd be fucking someone, soo..."
I have NO idea where the conversation started or where it ended, but do you think that has legs? If anyone incorporates that into a story, drop me a line. I think it sounds a little vicious for the kind of stuff I write.