Unfortunately for Christine, she was very ticklish. She doubled up almost as soon as Spock's fingers brushed across her ribs, all the air leaving her lungs in a sudden wheeze.

Spock raised an eyebrow and redoubled her efforts, and Christine blindly tried to grab the Vulcan's wrists and force her back.

"Stopstopstop," she gasped between her laughter, kicking futilely.