Lisa's Date with Density a child from Josh Weinstein's school days who everyday would get onto the bus with a piece of toast, which had Vaseline on it. A majority of the story is a reference to the film "Rebel Without a Cause". Lisa remarks that Nelson is "like a riddle wrapped in an enigma wrapped in a vest", a reference to "a riddle wrapped in a mystery inside an enigma"; this was Winston Churchill's opinion of Russia at the outbreak of the World War II. In its original broadcast, "Lisa's Date with Density" finished 63rd in ratings for the week of December 9–15,
In a Tidal Wave of Mystery day spent on a picnic blanket, [but] a little too late in the year." Chuck Arnold of "People" wrote: "With its buoyant synth-pop sheen, 'Safe and Sound,' the hit single that opens this disc, is bound to be one of the songs of summer. And this new duo keep the hooks coming on tracks like 'I Sold My Bed but Not My Stereo.'" All songs written and produced by Ryan Merchant and Sebu Simonian, except where noted. Credits for "In a Tidal Wave of Mystery" adapted from album liner notes. In a Tidal Wave of Mystery In a Tidal Wave