"Don't Be a Tough Nut to Crack" is a Sesame Street song sung by the Squirrelles to a walnut. They sing about how they won't give up on him, just because he's "harder than the rest", because they know he "tastes delicious". During the song, Darlene and Crystal try various methods of cracking the nut: alternating between each other, hitting it with their teeth, then jackhammers. Finally explosives work in cracking the nut, while they cause the trio to cough. The song is a parody of "Will You Love Me Tomorrow" by The Shirelles.