veepdaily:

It was a roller coaster of emotions, and it had to seem real. You know, that scene with Tony Hale that we had in the bathroom.. That was almost like watching a scene of two people getting high. She was kinda high, she was high on power, and the elation of that moment, and the news sort of took her to a, shall we say, higher place. But it was all very, hard work to make it look like that I guess is what I have to say, but the script was very fine and in place and we got it. But it was definitely alot of blood sweat and tears going into that episode, no doubt about it. - Julia Louis-Dreyfus talking about the crazy bathroom scene on KCRW.