At my old shop, we didn't have a deadline during the week (we were a PM on a weird schedule) and I lived half an hour away, so I would get home as late as 3 some nights. One night, I had a guy come up to my window and talk about how he and his old lady had gotten in a fight and he needed gas money. The fun detail was his admission that he was "tripping really hard right now." I told him I didn't have any money on me (which was true).
Two weeks later, I was moving to a new place and was putting gas in the rental truck before I returned it. Same dude came up to me, same story. Guess he didn't recognize me.