The affective element, otherwise known as humor appreciation, is involved with enjoying the joke and producing visceral, emotional responses depending on the hilarity of the joke.
Their discoveries--such as discarded underwear, nude photographs, hidden liquor supplies, and lovers' trysts--would provoke shrieks of hilarity from the studio audience and red-faced embarrassment from the unfortunate contestant.
Its an interesting rush to go from the frozen, two-dimensional hilarity of the comedy videos to the wild and crazy stuff generated by these basic improv games.