They shouldn't have given that one lady credit for the waterfall question, right? The correct response was "what is cataract?" for a huge waterfall, but she said "what is niagra?" They later credited her $2400 because giant waterfalls are sometimes called niagras, but the category was "3 As" so it had to have 3 As in…

A blue haired, beanie wearing Manic Pixie Dream Emoji. ARE YOU HAPPY, RABIN?!?

Since this episode didn't start where the last one ended, I'm going to assume that Jimmy ranted about the poor quality of that guy's treehouse all the way to their house without noticing Gretchen's breakdown.