In the wake of the above show and the response it got (both from the listening public and the other band involved), Yui wrote this song. Upon first reading the lyrics, Ritsu summarized them as, "Cocky, cocky, cocky, cocky, cocky," punctuating each word with a vigorous shake of her bandmate, whom she had by the lapels. But they recorded it anyway. :)

(English lyrics from the K-On! wiki. No warranty is expressed or implied, etc.)

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I tie my tie tight and now depart
While my heart is tied tight, too
A stage that's shown only to us
Let's go gathering our power
However many times I depart, it feels like the first time
Deciding one song is exciting and tense
But when we exchange looks, that easily
Changes mystery into happiness

We bask in the spotlight, light from around the world
We're just about gathered, always radiating

Because we're not incomplete, our motto is fun
Because we're serious
That riff just now was cool, it felt pro
Oh no, I'm already in high spirits
Could it be that we're geniuses?
Nobody says so, but we must be

There aren't any flashy accessories
Our sparkling sweat substitutes for jewels
We don't have makeup either, just unpainted faces
But to that extent, we're honest

Our smiles in full bloom, people around the world
If we can make them smile, it's amazing, touching

Because we want to sing, the atmosphere is love and peace
Because our dreams are huge
This harmony is perfect, knack instead of pitch
Oh no, I'm already nervous
We don't sit down, our feet on the ground
Making good use of the fluffiness, soaring, happy

We encountered it, we found it
The supreme bliss of playing, a sense of unity
Before knowing it, we won't go back to being lucky

So we're going to go forward, tea time is our energy
Because we love everybody
Extending the loop, an awesome outro, tension doesn't have a ceiling
Then let's go, let's go more
Come on, because we're not incomplete, our motto is fun
Because we're serious
That riff just now was cool, it felt pro
Oh no, I'm already in high spirits
Could it be that we're geniuses?
Nobody says so, but it's true

- Hōkago Tea Time
"Genius... !?"
Go! Go! Maniac! (2010)