Dean fussing over putting his hand in the lion's mouth - "The Scorpion and the Frog"
Sam and Dean sending Luther involuntarily through the poison darts - "The Scorpion and the Frog"
Sam and Dean's conversation over roasting a lizard - "Wayward Sisters"
Sam and Dean wrestling - "Various and Sundry Villains"
Sam and Dean fighting the stuffed dinosaur - "Scoobynatural"
Lucifer lending a hand during an exorcism - "Bring 'em Back Alive"
Dean and Lucifer's Peter Pan act, I mean apocalyptic death match - "Let the Good Times Roll"