When Steven Spielberg’s “Jaws” came out nearly 50 years ago, the Toronto cartoonist Paul Gilligan (Pooch Café) remembers cowering in the theatre and having recurring nightmares about the movie’s animatronic shark. He was only 10 at the time, but his fear left him with countless questions about what it means to be a man. Ahead of the film’s 50th anniversary, Paul has released a new graphic memoir, “Boy vs. Shark.” He joins Tom Power to talk about the book, what he hopes anxious kids might get out of it, and how “Jaws” transformed an entire generation’s definition of manliness.