is the third episode of the first season of How I Met Your Mother , originally airing on October 3, 2005. It is widely considered the episode where Barney Stinson’s character truly begins to shine, establishing many of his signature tropes and catchphrases. Plot Summary
: Barney continues his obsession with wearing suits, even for a trip to the airport.
: Barney convinces Ted to go to the airport to pick up women, a scheme he calls "legendary". They end up flying to Philadelphia on a whim, where they are detained by airport security for leaving their bags on a carousel at JFK. After being released, they end up at a security guard's house and eventually fulfill a dare to lick the Liberty Bell .
: This episode firmly establishes Barney's use of "legendary" and "wait for it".