I cracked up when he told Dave he had him half-way to being a hippie. Dave's expression was priceless. I have never owned any Birkenstocks but a friend of mine, who is very conservative, swears by them. He also likes to wear tai chi/martial arts slippers around the house. Says they are so thin they hold no perspiration so his feet stay warmer than in shoes or conventional slippers.
Once you wear Birks you will never go back.
I saw the show where Dave was bare foot and Cody was teasing him. He said next he will grow out his hair and my work will be done. WHAT A HOOT!