MP4 May 20, 2017 1:28 am ‘Tonight Show': Katy Perry's ‘Swish Swish' Is Her Anthem Against Bullies Katy Perry addresses rumors that her single “Swish Swish” is about someone everyone knows and gets hyped about her touring partnership with Boys & Girls Club of America. US & World Videos 1:40 Democrats say Big Oil misled public for decades about climate change 4:14 What to expect: Previewing the 2024 Met Gala 3:37 Learning about the Art Resource Collaborative for Kids 3:25 Mother's Day gift ideas with William James Gifts 1:35 Understanding the Biden administration's plans to reclassify marijuana