SF worlds often use constructed languages (or conlangs for short) as a worldbuilding tool. Marc Okrand, inventor of the Klingon language, and David J. Peterson, inventor of the Dothraki language and The 100's Trigedasleng, talk about the surprises they encountered when fans did or did not take to their conlangs. Lawrence M. Schoen of the Klingon Language Institute and Robyn Stewart, language consultant for Star Trek: Discovery, explain why Klingon culture spilled over into the real world. And Jen Usellis -- a.k.a. Klingon Pop Warrior -- will give you a serious case of earworms.