The original title of this episode was "The Bulimic."
Kramer's first name is finally revealed.
The French phrase, "ménage à trois," originally the title of an 1841 opéra comique, refers to a domestic relationship of two spouses and the lover of one of them, but as far back as 1300, the Middle English word "mayngnage," a domestic establishment of people living in a house, was common usage until 1500; therefore, George's remark about roommates in the Middle Ages (500-1500) isn't so farfetched.
"Glitterati" is a portmanteau word, combining "glitter" and "literati," which was coined in the 1950s.