During Seth Rogen’s visit on last night’s Tonight Show, he joined Jimmy Fallon for a very adorable segment called “Kid Stand-Up,†where the two perform standup jokes submitted to the show by real elementary school kids. There’s a lot of potential in these jokes, but I think six-year-old Kaleb’s choice to combine two classic jokes into one takes the cake: “Hey Jimmy, why did the chicken cross the road?†“I don’t know, why?†“To get to the idiot’s house. Knock knock!†“Who’s there?†“The chicken!â€