Anica, sometimes conversations run their course and die. And sometimes, before they do, people make jokes. It's part of natural conversation both written and oral. It's a way to transition away from a topic, or to give a break from the topic, or to circle around back to that topic. It's a very natural outgrowth most of the time. Here, I think it was totally fine, so I'm not sure what your issue is, especially given that you're supposedly such a new face here.
https://www.dropbox.com/s/z8ls3rc3f4mkb … n.txt?dl=1