The Pop-Up Mystery

A crisp white tip was poking out of the cardboard tissue box on the rug, so naturally I had to investigate! I grabbed the paper edge with my teeth, leaned all my weight back, and yanked. *Snick!* It slid free—but another one instantly popped straight up to replace it! How did it reload? Dropping low, I whispered a hushed murmur and swatted the new corner with both front paws. *Whick!* Another one popped up! I wasn't backing down. I tugged, hauled, and tossed sheet after sheet until a glorious mountain of crinkly white fluff surrounded me. The box finally ran out, leaving me victorious atop my paper nest!