Spoiler alert: stop reading if you haven't seen this episode. I learned from an Orthodox friend of mine that one cannot eat the cake on Shabbat b/c you would be deriving benefit from a Jew who transgressed Shabbat to deliver it. He said it's also ridiculous the idea of allowing the cake to be eaten so as not to disrespect the one who made it. So, this episode doesn't seem very realistic with halacha. I was disappointed that the show's episode came up with a rational that supports eating the cake on Shabbat when according to my understanding eating the cake is not permissible.