BAGHDAD—Volunteer aid worker Roy Rodriguez, 23, and the man who keeps him caged in a basement in suburban Baghdad have very different senses of humor, Rodriguez said in a video shown on Al Jazeera Tuesday. "He's into slapstick—he laughs when I take a harsh blow or get kicked down the basement steps," Rodriguez said. "I'm more of a Seinfeld fan—I see the absurdity in little things, like the fact that an Arabic speaker who coordinates relief efforts in Iraq is this moron's sworn enemy." Rodriguez added that he found the reaction to the recent group of Danish cartoons spoofing the prophet Muhammad "sort of funny," but that his captor "doesn't see the joke."