Guys Prank Friend by Convincing Him Study Room is Soundproof

These two guys decided to prank a friend by convincing him that the study room was soundproof. One of them went inside, pretending to shout. When the friend couldn’t hear the sound, he was convinced and decided to try it himself. As he entered the room and shouted, the two guys burst into laughter because they could clearly hear him from outside, proving their prank was a success.