WhenLarry Hagman (Tony) hits the wall and falls somersaulting over onto the couch, he actually got hurt. Barbara Eden points to her lip to let Hagman know he's got blood there. She then looks at the director, who presumably tells them to keep rolling, so she ad-libs and asks Larry if it hurt and tells him to kiss her quickly. She uses the kiss to remove the blood from his lip. He later does the same couch somersault stunt in My Master, the Doctor (1966), twice successfully - presumably without injuring himself. It was perhaps hitting the wall that gave him a bloody lip, not the somersault.