Meryl Streep [1] was so committed to her role as a failed rock star in Ricki and the Flash [2], she actually learned how to play guitar for the movie. Her first teacher, a two-time Rock and Roll Hall of Fame inductee, gave Meryl a lesson she's not about to forget. The actress delivered her hilarious impression of him — complete with an obscenity and kick — when she stopped by The Tonight Show Starring Jimmy Fallon on Monday. Watch Meryl in all her glory, then catch up on the latest viral videos [3].