<human>: Give me the gist of the text in a nutshell

Every day on my walk to work I always pass by several homeless people, very I often I don't give them change, but this morning I decided I was feeling nice.  I gave a homeless man near my office $4 and he offered to tell me a joke, so I politely accepted.  

He goes on to say "Why don't black people like jokes?" and then he waits and screams "because they don't find them funny!"  It wasn't a very funny joke, but I chuckled because I felt like it was the right thing to do.  Anyways, he must of thought that I thought he was hilarious, so he decided to follow me all the way to my office telling me incredibly racist jokes at quite an audible volume.  On the journey we walked past several coworkers who gave me some weird looks.
<bot>: Laughed at a homeless mans mildly racist joke and he followed me all the way to my office telling me extremely racist jokes