Floppy discs, Walkmans, cassette tapes, CDs, and beepers are all considered museum-ready relics today. If that makes you feel old, wait till you watch "Kids React to Rotary Phones," the latest viral video from Benny and Rafi Fine — the vloggers behind the viral videos, “Elders React to Eminem” and “Teens React to Gangam Style." The Fine Brothers put a spin-dial phone in front of 12 kids from the iPhone era and totally blew their minds. The video, which has been viewed more than 2 million times since it was posted this past Sunday, proves that kids today need a history lesson, or at least a rotary dial app on their smartphones. Not convinced? Here's how the kids, ages 5 to 13, responded to some very simple questions about the common rotary phone.