How I Met Your Mother season 3, episode 12, "No Tomorrow," finds Ted embracing a chaotic, hedonistic lifestyle on St. Patrick's Day, only to realize the error of his ways via 17 voicemails. This key episode introduces the yellow umbrella and reveals the Mother was at the same club, though she and Ted did not meet. For a detailed summary of the plot and the "roller luge" subplot, visit How I Met Your Mother Wiki . I don't understand episode 12 of season 3 "No Tomorrow"