It's almost April Fools' Day, and the American Chemical Society's (ACS') Reactions video series is celebrating with an episode featuring our favorite chemistry jokes. Which two elements look cute together? Why is father water concerned about his "iced out" son? What do you get when you combine sulfur, tungsten and silver? Get all the punchlines in the latest Reactions episode, available at http://youtu.be/C5RZRkhk0OM.