Video: 'Slap bet from How I Met Your Mother'

(Monday, November 20, 2006, 8:00 p.m. EST) — Barney uncovers Robin’s secret past and the real reason behind her strong aversion to malls, which leads Barney and Marshall to make a bet on tonight’s episode of the CBS sitcom series How I Met Your Mother.

In 2009, TV Guide ranked this episode #56 on its list of “TV’s Top 100 Episodes of All Time.”