Can't figure any lyrics out

How do the words to it go?

I wish you'd tell me, I don't know

Don't know, don't know, don't know, I don't know!

Don't know, don't know, don't know...

Now I'm mumblin' and I'm screamin'

And I don't know what I'm singin'

Crank the volume, ears are bleedin'

I still don't know what I'm singin'

We're so loud and incoherent

Boy, this oughta bug your parents

Yeah!

*belch*

Hing!

It's unintelligible

I just can't get it through my skull

It's hard to bargle nawdle zouss

With all these marbles in my mouth

Don't know, don't know, don't know, I don't know!

Don't know, don't know, don't know...

Well, we don't sound like Madonna

Here we are now, we're Nirvana

Sing distinctly? We don't wanna

Buy our album, we're Nirvana

A garage band from Seattle

Well it sure beats raisin' cattle

Yeah!

Moo.

Baa...

And I forgot the next verse

Oh well, I guess it pays to rehearse

The lyric sheet's so hard to find

What are the words, oh nevermind

Don't know, don't know, don't know, I don't know!

Don't know, don't know, don't know...

Well, I'm yellin' and we're playin'

But I don't know what I'm sayin'

What's the message I'm conveyin'?

Can you tell me what I'm sayin'?

So have you got some idea?

Didn't think so

Well, I'll see ya

Sayonara, sayonawa

Ayonawa, hodinawa

Odinaya, yodinaya

Yaddayadda, yaaahyaaah

Ayiyaaaaaah!