The smack caught his attention, his body jolting in surprise; it also kept his teasing and prodding silent for the most part. At the words, Spock looked over his shoulder at Jim, eying the beads with an honest interest, not even entirely sexual.

"I shall be patient, for you." Quiet and at ease, save for the minute tension in his hands. He'd grab and examine it for himself if he didn't already know that Jim would stop him.