Season Two (2006-2007) of How I Met Your Mother. Original airdate Monday, January 8, 2007.
When Robin tries to talk her younger sister out of losing her virginity, Barney recalls his "dirty" first time as the gang shares stories with each other about their first experiences
As Robin tries to talk her sister out of making a bad decision, she must face her own relationship fears. Meanwhile, they all tell funny stories about their first, but Barney tells the most outlandish. After he shares several entertaining versions, all mirroring scenes from hit movies, he finally gives up the true story.
Description provided by CBS.

