Chris Crocker gained fame as a teenager in 2007 when his impassioned defense of pop star Britney Spears became one of YouTube’s first truly viral videos. Now, he’s looking to cash in on the video.

There is a moment in the documentary Me @ The Zoo where Internet sensation and mega-Britney fan Chris Crocker says, “People already saw me as this celebrity-obsessed cartoon. That’s what I’ll perform.

Chris Crocker has been called “queer,” “a human train wreck,” the “Britney guy,” an androgynous “it” and much, much worse. But how does this 19-year-old Internet phenomenon, known worldwide for his ...