High Quality Content by WIKIPEDIA articles! "The Stag Convergence" is the twenty-second episode of the fifth season of the sitcom The Big Bang Theory. The episode premiered on April 26, 2012 in the United States on CBS. In the episode, the main characters go to the bachelor party to celebrate Howard (Simon Helberg) and Bernadette`s (Melissa Rauch) upcoming marriage. At the party, a drunk Rajesh (Kunal Nayyar) reveals some information about his past sexual encounters. When Bernadette picks them up from the party, Howard and Rajesh find out that Bernadette learned about his sexual history from a video posted on the internet.