Blue's Perfect Math Class [Teacher!UnderSwap!Sans x Student!Reader]

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A parody fic. Request by Black_Shadow_Rose. Let's go.

Everybody! Blueberry's math class is about to begin!
To become a genius like me, do your best!

A sparkling diamond, like a shining star
Glory, my preferred school, I'll get in somehow
Genius, prodigy, aim for the top, GO GO!!

"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
Wait, no, I'm not an idiot!
"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
The one saying idiot is the idiot!
"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
What, how annoying! You idiot!
"IDIOT IDIOT IDIOT IDIOT"

A bus left the Snowdin Public Station; three people boarded at the start
At Hotland Laboratory, one left and half a person boarded
At (Your Name)'s house, two people left; so how many passengers in total?
The answer is, the answer is, zero people, zero people
That's because, that's because,
There are no buses in Snowdin!

There's not any climax, point, or meaning.
Everything will be okay as long as the character settings are fine 'n good
With energy, everything is 1, 2, 9!

The clock's hands are whirling, my head is spinning round
Because there are only two round eyesockets,
There are three needles, it's as clear as mud

Problem after problem comes out; Still, still, the lesson continues
In the taco-filled room
Without considering the hunger or time

"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
I told you I'm not an idiot, didn't I?
"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
Give it a rest or I'll make you blue!
"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
Then your soul can shatter into little pieces!
"IDIOT IDIOT IDIOT IDIOT"

At (Your Name)'s home, someone broke a million-gold vase
 Papyrus and I came to reimburse them
The prankster Temmie feigns ignorance; what is the final amount of compensation?
The answer is, the answer is, zero gold, zero gold,
That's because, that's because
There's no way that vase exists

The truth of the world is beyond the realm of common sense
Aiming for the secret digit, 1, 2, 9!

Laughing foolishly, laughing loud
Flowi, though he's loveless
Brings in immature newcomers handily, handily, handily

They watch it times, what ignorant fools!
What is this about?! I may as well say
Good job, server management!

I got it! Because I'm such a genius,
You're jealous, aren't you?
You're really just too much~
Since you really want me to, I'll teach you
a little of the secret to my genius, okay?

Every, every, every, every,
Every, every wisdom
Even if you gather, gather, gather, gather it
My, my, my, my,
My, my strong
Skull, skull, skull, skull can't be matched by you

Taco, Taco, Taco, Taco,
Taco, Taco, after that I
Train, train, train, train, train, Train with Alphys
I'm, I'm, I'm, I'm,
I'm, I'm flawless
What is called, what is called, what is called, what is called perfect

One-hundred billion trillion thousand good!

There's not any climax, point, or meaning.
Everything will be okay as long as the character settings are fine 'n good
With energy, everything is 1, 2, 9

The clock's hands are whirling, my head is spinning round
Because there are only two round eyesockets,
There are three needles, it's as clear as mud

Problem after problem comes out; Still, still, the lesson continues
In the bone-full room
Without considering the attack or time
Take it easy!

"IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT
IDIOT IDIOT!
IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT
IDIOT IDIOT!
IDIOT IDIOT IDIOT IDIOT IDIOT IDIOT"
Fine, call me an idiot! I don't care anymore!
"IDIOT IDIOT IDIOT IDIOT"

Bonus Mini paragraphs of a story

Blueberry sighed, nobody liking his new class he opened up in snowdin. He slumps on the curb when one of the students from earlier comes up to him. It was the student he used in all of his example problems. He smiled at her.

"For the record, Mister Blue, I don't think you're an idiot."

With that the student bent down to give him a peck on th cheek before leaving. Blueberry watched them skip off, catching up with their friends. Blueberry then grew a grin wider than the time he stole some of Papyrus's honey.

If one kid didn't think he was an idiot, it was good enough for him.

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