Zack tries to plan a party for Maya's birthday. Sean Kingston boards the SS Tipton, and Zack uses him to throw a party, but he lies and says the party is for London (of whom Sean likes). Then, the lie is escalated further when Moseby finds out, and Zack lies and says the party is for him.
Not one of their best episodes or anything but it was worthy of a few laughs. Sean was a good guest star and thought he was one of the best guest stars the show has had. And Maya liking all the trouble Zack went through for her? Nice. B or so as a grade, I think is fair