The love of functions and derivatives

Function finally couldn't help laughing out loud.

Anyway, everyone was laughing, and the function simply broke the jar and laughed loudly. The laugh was so unscrupulous and evil, so that the derivative was infected by the function's laughter, and the corners of his mouth were raised.

"Kill Matt? Bury the love family?" Function asked with a smile, because the pronunciation of the words changed because of the laughter, "Let me guess, then do you have a personalized signature called 'My Favorite? The flower is Bana, my favorite color is black' hahahaha—"

The two words Shamate Burial Love Family were still in that era, and the derivative finally caught up with the thinking of 5G surfer functions. He nodded and smiled, "My former idol was Burial Love Family."

The function seemed to have opened up the question box, and asked again: "Then why haven't you played QQ for more than ten years?"

Hearing the words, the derivative restrained his smile, his eyes were a little empty, as if he was recalling the past, his lips opened and closed several times, obviously trying to organize his words, and it took him half a minute to answer the function: "Because I met a lunatic on the Internet, once Bitten by a snake, I was afraid of well ropes for ten years. Hey, you may not believe it, but before I met a lunatic, I did everything from drinking, smoking, burning my head."

Here is an explanation. The mathematical definition is not only immortal, but also not aging. They grow from a baby to an adult, and then their appearance and height will always stop at the age of 25 and will not change.

The function indicates that it is difficult to connect these with the extremely self-disciplined derivative in front of me who likes to make tea and keep healthy.

"Later, I matured a lot, so I decided to change my mind, start a new life, and get rid of all these bad habits." The derivative admired the incredible expression of the function in front of him, "At that time, I spent a lot of money to wash the tattoos on my back and arms. Apart from--"

Before finishing a sentence, it stopped abruptly, obviously the owner of the voice thought of something.

The function didn't pay attention to the strange sentence of derivative, but said in surprise: "Did you have tattoos before?"

Derivative nodded in affirmation, and then seriously preached to the function, "If you want to get a tattoo in the future, just buy a tattoo sticker and stick it on. Don't get a real tattoo, it will hurt like an idiot when you wash it off."

Function laughed out of breath: "You treat me as a child? Give me tattoo stickers? I give back a watch with black strokes on my wrist!"

The topic suddenly turned to a corner, and the two talked about some childhood memories, including playing marbles and playing paper, and the never-ending black cat sheriff and gourd baby on the children's channel.

No one has pursued the previous "except—" which was full of loopholes.

So... except what?

Except for the tattoo on Derivative's left chest that no one can see through a layer of black shirt fabric.

He washed off all the tattoos at the time, but he specially asked a tattoo artist to redesign a tattoo pattern on his chest.Desperate to destroy the traces of his disgusting past, he had to do so.

Except for the tattooist, no one knows since then that behind the pattern is a piece of uneven skin——

It was a terrible scar left after being pierced through the chest by a sharp weapon.