The art world’s veteran pranksters, Peter Fischli and David Weiss have long reveled in life’s randomness and banality. Objects from their studio fly, roll, and explode into one another in their now classic video “The Way Things Go.” A duo since 1979, they make ample use of the handmade and ready-made junk they find all around. But the element of surprise in their collaboration is paramount: For a series of garden portraits, one of them shot an entire roll of film, then rewound it so that the other could shoot the same roll again. Despite the slapstick, there’s clearly a method to their madness. “We never go directly for jokes,” Weiss once noted, “but if the joke is good enough to be inside of something else, then it’s okay.” The pair is shown here preparing for their first major solo exhibition in Japan, at the 21st Century Museum of Contemporary Art, Kanazawa, which runs through December.