During the Sasuke retrieval mission, Shikamaru got separated from the rest of his team, and faced off against the genjustu user of the sound four, Tayuya. A red haired, bad-tempered girl who posed quite the obstacle for the chunnin with her flute and her summons.
At one point, Tayuya played a particular melody that left shikamaru completely immobile.
Tayuya: Ha! I got you now, filthy rat. How about you toss away that equipment of yours. You won't be needing it anymore.
Shikamaru's body remained stiff, except for his arm. Which slowly approached the strap of his bag where he stored his remaining tools. He began untying it until it was loose, and then tossed it away into some bushes nearby.
Tayuya had a cocky look on her face, seeing how her foe had completely fallen under her control.
Tayuya: I guess we are done here. Now, to wait for the others to catch up.
She sat on a fallen log and waited, while shikamaru stood still in front of her. Some time later, after growing bored and with no sight of the others, Tayuya got an idea to pass the time.
Tayuya: since we are going to be together for a little while more, you could at least be useful.
Tayuya leaned back, resting her hands on the log, and stretched her leg forward, pointing her foot at Shikamaru.
Tayuya: Take my shoes off and give me a good foot massage. You won't stop until I say so.
Shikamaru approached quietly, and got on one knee of her before he could to touch Tayuya's shoes he was interrupted by a sudden and implacable gust of wind, which send both flying and crashing into the trees. Shikamaru woke up from the impact, having no memory of the time he had been under her control. The one to arrive to shikamaru's rescue was Temari, the princess of the sand village, and the battle became a match between Tayuya and Temari, with the latter turning up the winner. Even so, Tayuya successfully escaped.
The mission continued, and the result was a complete failure, as Sasuke had not been brought back and most of the kids on the team had got severely injured. He blamed himself.
One full moon night, while Shikamaru finally fell asleep, a strange feeling took over his body, waking him up making him leave bed, he was hearing a beautiful melody as if it was calling him. He left his home in the middle of the night and even got outside the village. Wondering deep into the forest, heading to the source of the melody, at last, he found a woman waiting for him.
???: Took you long enough time, dog!
Said the impatient woman, revealing to be Tayuya herself.
Tayuya: I see my genjutsu's secondary effect is still in place. Now let me explain to you even if I doubt someone like you will understand, once you fell under my genjutsu, even if you got freed from it, it would re-activate any time I play my melody even if you were far 100 km (63 miles) from me, putting you back under my control. That girlfriend of you spoiled our last reunion, but I think we can resume where we left off without being interrupted now. So where were we? ... Oh yeah, I think you were on your knees.
Shikamaru knelt, with both knees, this time. Tayuya then lifted her foot and put it inches away from his face.
Tayuya: And you were about to take my shoes off and give me a foot massage, Am I right?
Shikamaru removed both her shoes and began rubbing them with both hands, her feet were warm and soaking wet with sweat, probably from walking all the way back to the village. Tayuya was enjoying the feeling of her feet being caressed and rubbed. As she spread her toes with delight, she spotted quite the large amount of toe jam in between them, this would normally be embarrassing, but this was her newly acquired slave in front of her, so with a smirk on her face, she knew what to do.
Tayuya: Hey rat! You see all that tasty toe jam in there? I want you to lick it all clean and eat it. Now * snap *!
With no hesitation, he stuck his tongue between her toes and began scooping out as much of it as he could and then, put her toes in his mouth to suck any leftovers. All of this without stopping the massage for even one second, while he's still hearing the best melody her ever heard in his life.
Tayuya was very pleased, so this kept going for a few hours more, until she finally decided she had had enough and left. Shikamaru went back to his house as per her command, and not long after, woke up on his bed, feeling inexplicably tired and with an awful and unknown taste in his mouth.
This routine would repeat every day, even as a teenage, he would go into the woods to serve his secret mistress. Who would progressively add more stages to their routine, like making him clean her shoes with his tongue or walking all over him just for fun.
This had been, without a doubt, Tuyuya's best move.