I can't remember the last time I saw an AM beggar. They're almost always PM.
A few years ago, there was this one particular AM begger who kept on going on and on about his problems, the usual suspects (he really wanted to get a job, but lost his birth certificate, etc. etc.). Clearly getting no love, he then said it was his birthday and asked everybody to wish him happy birthday. Again, no love. Then seeing he was about to strike out, he said he had AIDS. No love there either, so on to the next train car it was.
And I haven't seen this one woman in a few years either, but she used to go on a train with a construction tub of sorts and pretended to use it as a drum to keep the beat while she was singing her song about being broke. Only thing is, she was soooo bad at the "drum" that it just sounded like an odd thump at random points in her random song.
And I only saw this once, but a mom and her young son came on the train begging for money, the mother claiming that the son was starving. Only thing is, the kid was like 5'8" and 450 pounds, so it invoked contrasting thoughts of "well of course he's starving, the only way to be that big is to be ALWAYS starving", as well as "he looks pretty full to me".