For those who don't know, Trey said he was doing it because someone in the audience was holding a sign which said "Poster Nutbag: Do It Right". Trey brought him and his 'girlfriend' on stage, and they got their whole crew up. They went into some strange rap about a floating Best Western (Best Eastern, according to one of them), a cat and dog fighting, and Al Gore. It was a bit too weird for some people. Some quotes include "cringe-worthy", "terrible", and "this is their way of getting people to stop requesting Harpua".
I personally found it hilarious. Like the movies Titanic II or MegaShark Vs. Crocasourus (the latter is a great way to torture film students, btw), it was so poorly executed, it was hilarious to watch, and probably intentional.
Then, Trey kicked them off stage, said how weird it was, and something in his head must've said "speaking of weird...", and he told Mike to tell the story of Harpua. Mike told a hilarious story about a cat in Chicago.
They then did the end bit (and flubbed the "YOUR CAT DIED!!!!!" line), and as they ended it Trey thanked the cast of the Second City Improv Group for coming on stage.
People are going to hate on this Harpua and say it was the worst, I think it was the funniest.