Sydney grabs Willow's sensitive feet and alternates between sucking, kissing, rubbing, nibbling, licking, and occasionally tickling them to Willow's delight. These two have very good chemistry and Willow communicates her approval, mostly without words.
This is not a tickle clip, but it does happen from time to time as Sydney couldn't help herself in spots, and Willow is ticklish to foot worship at times.