An MIT “Gangnam Style” parody video that’s gone viral this week features one of the best known academics at the university: linguist and political activist Noam Chomsky. The “father of modern linguistics’’ is in the video for about 7 seconds. It features Chomsky, 83, sitting in his office, sipping what appears to be a cup of tea, and then saying, deadpan, “Oppan Chomsky style.” The video is a parody of the hit by Psy, a K-pop star, who briefly attended Berklee College of Music and Boston University before recording “Gangnam Style,” which has become an international hit. Chomsky told a Globe reporter in an e-mail: “I was happy to spend a few minutes with kids having some fun.” MIT senior Eddie Ha, the director of the video, said Chomsky immediately agreed to participate. “[Chomsky] said that his grandchildren would love this,” Ha said. Also featured in the parody is Eric Lander , professor of biology and one of the leaders of the Human Genome Project. In one scene, Lander dances around Ha, and the two then jump up onto a desk. “He actually heard of the song before and he was really excited to do it,” Ha said, adding that Lander choreographed the moves on his own.