A fourth-grade class in Florida that's gone online due to the coronavirus was interrupted Monday by a lesson most parents don't want their young children to learn. Arcadia resident Claudia Reyes says her son was attending virtual class on his laptop when the Zoom stream was suddenly disrupted by a porn film. "I was doing the dishes, then I started hearing bad words," Reyes says. "So I’m like, ‘What’s going on? Are you in the class or are you in something else?' He’s like, ‘No, I’m on the class.'" Doubting her son's word, Reyes says she walked over to him to see for herself -- and was shocked by what was on the screen. "I put my hand on the other side of the screen so he wouldn't see anything, but I could see the other kids' faces and they were, like, shocked," Reyes says. The intrusion was apparently part of a new fad called "Zoombombing" in which a stranger hacks into a Zoom conference call, officials say. For it's part, Zoom is telling parents and students to never share their personal meeting IDs, allow only signed-in users to join conferences via email invitations and to lock down meetings once everyone has signed on.