<human>: Can you condense the text into three sentences or less?

So it's a sunny afternoon in Boston and I am walking back to my apartment during my freshman year in college. I am suddenly approached by a black man who looks obviously homeless, and sparks up a conversation. I actually enjoy talking to the homeless (most people are intimidated by the Boston homeless), either because you get a chance to make their day better or they tell you some hilarious shit sometimes. 

 Anyway, he tells me that he just got out of a year in jail, just need some money to get back on his feet. And as I am asking him what he went to jail for he stops me and says: "hold up man, what was your name again?" I looked kind of confused because I never told him my name, but tell him that its Rob. He then says "nah nah man, back in the day I KNEW YOU AS NATHANIAL" (which is actually my full real name). I fucking froze. He then claims to have hung out with me plenty of times about 4 years ago, but I had only lived in Boston for about 3 months.  This guy had supposedly been in jail for years...how in the fuck did this guy know my name? And how would he guess a name like Nathanial? Never saw him again, still creeps me out.
<bot>: Homeless man confidently guesses my name and claims we used to hang out years ago 3 months after I move to the east coast.