Was amused the old mid-1960s Hanna-Barbara The Secret Squirrel Show cartoon that parodied the spy movie hype of that era is kept alive today by a phrase used by U.S. intelligence experts, at least according to National Public Radio (NPR). Describing something as “secret squirrel stuff” puts the information beyond the reach of the public and slightly into the land of absurdity. Trying telling that to this squirrel in the backyard.