Lily and Marshall visit their friends Claudia and Stuart who have just had a baby only to discover the couple has not yet named the baby because they can't agree on a name. This causes Marshall and Lily to discuss potential baby names and the two quickly realize they can't agree on a name either. As Marshall starts to list potential names, Ted realizes he is only choosing boy names and confronts Marshall. Marshall admits he can’t bear the thought of having a daughter and has upsetting thoughts of his future daughter becoming a stripper and even ending up with Barney. Marshall consults his father, who gives him tips on conceiving boys, advice that has been passed down through many generations of Ericksen men since the Viking age. Just before he and Lily are going to have sex, he consumes pickled herring and dunks his genitals in ice cold water, Lily is suspicious and after confronting him Marshall discovers Lily is actually doing things to try to have a girl. Eventually the two realize all that matters is that they have a healthy baby, no matter what gender. Meanwhile, Robin is very annoyed with her new co-host Becky who likes to speak like an 8-year old girl. Making matters worse, is that Ted finds Becky charming and starts dating her. This prompts Barney to see if he can pick-up a girl while talking like an 8 year old boy. Eventually, Ted gets creeped out by Becky and Barney finds a woman crazy enough to find Barney's childlike behavior a turn-on.
