With the number of Housewives Bravo host Andy Cohen hangs out with, you'd think he would know a thing or two about what happens when they go to the gynecologist, but you'd be wrong!On his December 1 episode of Watch What Happens Live, the 56-year-old host wound up getting a lesson about what a speculum is thanks to Married to Medicine star Dr. Simone Whitmore, who took him back to biology class to give him the skinny on how the medical device works.The moment happened during Cohens last taping for his talk show at the Bravo Fan Fest in Miami. Apart from members of the Married to Medicine cast, some ladies from The Real Housewives of Potomac were also in attendance, one of whom ultimately became the reason for the segment, Decider reports.Cohen introduced a game called Is It Bigger Than Mias Foot? as a fun dig toward RHOP star Mia Thornton, and the object was to determine if whatever Cohen held up was bigger or smaller than her feet.During the game, Cohen held up a speculum, which, for those uneducated, is a tool gynecologists use to look inside the vagina to examine the cervix.When the speculum came up, Whitmore joked that it was around the same size as Thorntons foot, when it is, in fact, much smaller. Still, this prompted a confused Cohen to ask her how the speculum is used.This led to a demonstration from Whitmore, who explained how the speculum entered the vagina and how the woman feels pressure once its opened up inside of her.This prompted a swift, Okay, you learn something new every day, from Cohen, with Thornton joking that he cannot check my cervix. That is where I draw the line.Cohen couldnt agree more.Stream new episodes of Watch What Happens Live Monday through Friday on Peacock.