bitchertation

a long and/or angry rant that you didn't ask to listen to

etymology:

bitch (verb- to complain)
+
dissertation (noun- lengthy research paper with citations)
=
bitchertation

Giving advice to a new coworker: "Watch out for Tina- don't get trapped into conversations with her. One time, I just asked how her day was going and spent the rest of my lunch period listening to a bitchertation about kids nowadays"

After Terry's fifteen-minute long bitchertation against Taylor Swift and green M&Ms, the interviewer decided that this person is not a good candidate for the open position of town librarian