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 0:53 Police in New Jersey wrangle runaway “ham-some” pig 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 2:15 Prince William and Kate Middleton ‘going through hell,' friend claims (report) 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 2:48 Taylor Swift fans react to Jake Gyllenhaal and Sabrina Carpenter's ‘SNL' appearance