Laying on the sand, the towel underneath Natalie was warm from the sun. Kate's towel was the same, as they had decided to go on a brisk walk around the beach to see if they found anything interesting. When they didn't, they decided to go back and lay on the towels for some sun. The towels were right next to the other, forming a larger blanketing surface fit for two sunning women to lay their fronts on. As the sound of the sea and calming tones were heard, it became apparent they were utterly alone, the time they had been gone had apparently given enough time to allow everyone to leave this section of the beach. As Kate realized this she formed a dastardly plan to tease her partner.
She scooted over and saw Natalie was asleep, resting peacefully and adorably, her breasts pressed against the towel she laid on. Neither of them had large boobs, but they had always thought they were sufficient and amazing to feel or simply to tease the other with, though this time they weren't the object of Kate's planned teasing. Kate sat up gently, then leaned back down to lick the neck of her partner softly, then took her head back to see her reaction, hoping to get a little laugh. Natalie didn't awake, but simply laid there. Seeing this, Kate licked her neck again, and nibbled her neck this time, adding more teasing to let her react, but to no avail again. She tried once more, but now nibbled her ear, knowing it was a weak spot for her partner. Natalie groaned a bit, feeling that, and shuffled a bit in her rest, then woke up to face her sleep-interrupting teaser. She sat up softly, blushing and looking at Kate, her bra wasn't attached so she wouldn't get tan lines, and she was fine with Kate seeing her boobs by now.
"W-why are you teasing me with my weak spot when I want to tan?" She spoke groggily, but sensibly. Kate noticed her nipples were actually perking and hardening now, and blushed at this, becoming a little wanting for Natalie.
After the silence of staring at Natalie's hard nipples, Kate spoke: "Because... this." Kate leaned forward and swiped Natalie's tit with her tounge, evoking a gasp from Natalie, and a coo at the end. Kate didn't know, but Natalie had been getting really horny from the walk, the beach bringing out her lust strongly.