This part is funny for many reasons....isn't it reasonable to assume that Celia shits if he (Strephon) shits. It's crazy that this is a discovery worth mentioning. Also, Swift is making fun of and criticizing the imperfections of women, who have, at least, an outward appearance of perfection once they've gone through all of these primping processes. At the same time, it makes me wonder--what do the men look and smell like not ever bothering with any of these transitions?