Because I can.
He didn't quite know how to answer her question. But she was looking at him expectantly, cheeks flushed and hair askew. He searched his mind for something to say, but with her straddling him like this, his search didn't go very far. "Um, you?"
Tenten rolled her eyes. "Of course I turn you on,otherwise you wouldn't be under me right now would you?"
Neji couldn't quite reply, because at that moment Tenten sat up on him. She formed a very familiar hand sign. "Fine, if it's me you want..."
All of a sudden there were two Tentens. Both looked down at Neji in a satisfied way saying, "Then it's me you'll get."
Hellooo, they're ninjas. Instant threesome!
Or whatever. Clearly this was quite a misguided attempt.