Friends of mine

I'm walking to the train to get to work (already late). I see a cracked out homeless lady walking to me, swerving madly like a drunk driver behind a car. So I swerve in the other direction to avoid the crash. Oh but wait, I see her scratch her greasy head, inspect her fingers and dash towards me, arm outstretched, with a slurred "Excuse me sir" as she purposely wipes her fingers on my arm and walks away.