Flowey: (Spoken) Howdy! You didn't forget about your best friend, didja? Well, I certainly didn't forget about you! And lucky you, I brought along some new friends! As you can probably tell, THEY'RE ALL SPIDERS. Have at it, girls! It's dinnertime!

(Sung)
 [bad word] to your nightmare,
Sorry but there's no escape
It's kill or be killed,
Then you'll see another day

Well now, just relax [bad word] closer to me
I'll just dry your veins
And enjoy a cup of tea! (Muffet: 2, 3, 4!)

Get up and dance to my song
Hear me as I sing along
Until my poison meets your bones
Feel it? It's just a chill
It's just a way to say I'm done
When you can't even stand up
 That means you're already gone!

The [bad word] again
The spider dance will now begin
It's really nice to play this game
My victims never are the same!

Looking deep inside your eyes
I get to see your biggest fears
Now that I am satisfied

Instead of tea, I'll drink your tears!

It's only me
Your friend Flowey
Won't you join the dance?

Just give up, man,
I know you can,
Won't you join the dance?

Nowhere [bad word] 
Nowhere to hide
Won't you join the dance?

Give up and free
The beast inside
Won't you join the dance?

Will you, won't you,
Won't you join the dance?

Will you, won't you,
Won't you join the dance?

The [bad word] again
The spider dance will now begin
It's really nice to play this game
My victims never are the same!

Looking deep inside your eyes
I get to see your biggest fears
Now that I am satisfied
Instead of tea, I'll drink your tears!

Will you, won't you,
Won't you join the dance?

Will you, won't you,
Won't you join the dance?

Will you, won't you,
Won't you join the dance?

Will you, won't you,
Won't you join the dance?

(Adapted from Radix Music)