Bitchathon

To bitch and rant about someone or something, marathon style.

A: Am I going to get an apology for last night?
B: Yeah, sorry, my bitchathon went too far.

C: God, I hate X. He's such a pretentious twat. And really arrogant and smug all the time, he just lords it over everyone.
D: I know what you mean, he rubs it in everyone's faces that he has three jobs and doesn't care that he's offending anyone in the process.
C: I swear he tried to use me for ideas for his work as well.....