"It's not crazy like psychotic, it's crazy like zany," she said of the book, while her father quickly deadpanned: "You are not psychotic."
Both say Sophie's book, which follows her life from growing up in France to living in New York and becoming a mother, was not influenced by drugs, such as LSD, that her father has long admitted affected his work.
Neither was her style of drawing modeled after R. Crumb's, which, famously, is characterized by the funky "Keep On Truckin'" guy from the 1970s or iconic Fritz the Cat.
"BORN INTO IT"
Sophie Crumb said she had no real insight into how his work may have influenced hers. "To me, you can't have an opinion about it when you are born into it, it's just normal."
She was inspired by early cartoonists such as Frederick Bean "Tex" Avery, who created several Looney Tunes characters, as well as figures like "Popeye" and the "Fritzi Ritz" and "Nancy" comic strips. She counts contemporary comic book artists such as Daniel Clowes, Joe Matt, Joe Sacco and Julie Doucet among people whose work she admires.
"People say they recognize his artwork in mine, but I don't -- obviously," she said of her father.
Instead, Sophie mocked her father for his "weird drawings all over the house" when she was growing up.
"It was, really, always me and my parents together. When we moved to France, I made friends there. We lived in a village, but we were still the weirdos," she said, while he laughed.
Looking back, she also disagrees with her iconic dad on whether he was aware of his fame. "It is weird , I don't get it," he said of his celebrity status.
"But you always wanted to be famous," she interjected.
"I wanted to be appreciated," he calmly corrected her. "I wanted to be recognized for my work, any artist does."
But both agreed that, with the movie and art worlds now embracing comics and cartoons more than ever, current times were far removed from the underground days of the 1960s.
"Comics were made for print, they are not really made to look at on a wall," he said. "To me it is not a finished book until it is printed, until you have a book in your hand."