One day after his lunch with his squad (Squad 7) and Squad 10, Sai was in the library doing more research on human emotions, personalities, feelings and bonds. He had a whole row of books on his table and was reading all of them very diligently.
"I still do not understand this whole 'nickname' thing, but at least the last time I came up with one, the girl did not smack me," Sai thought to himself, "Oh well, I'm sure I will understand it eventually." Sai put down the book and opened up another one.
'Things Friends Do With Each Other' it was called, he looked in side it and started to read. About half way through in a chapter called, Silly Games, he came across a word he didn't know. "I wonder what this word means," he said to himself. He got up and walked over to the bookshelf, got a dictionary and started looking. "T...I...C...K...L...E..., Ah here it is, Tickle, it had many definitions, but when he looked at the other book again, he was able to narrow it down. "I really should learn more of this," he thought.
After a lot of referencing and searching, he finally found an old book, he checked it out, with about a hundred other books and lefts for his home. When he got there he sat in a chair and opened up the book, it told all about tickling, how to tickle, where to tickle and even some tickling justsu. "Hmm, I should find out wether or not that Naruto-kun is ticklish," He thought. He closed the book and left, to go find Naruto, he first checked...