Song Annotation

Someday they won't let you, so now you must agree

The times they are a-telling, 

and the changing isn't free

You've read it in the tea leaves, and the tracks are on TV

Beware the savage jaw 

Of 1984

They'll split your pretty cranium, and fill it full of air

And tell that you're eighty, but brother, you won't care

You'll be shooting up on anything, tomorrow's neverthere

Beware the savage jaw 

Of 1984

Come see, come see, remember me?

We played out an all night movie role

You said it would last, but I guess we enrolled

In 1984 (who could ask for more)

1984 (who could ask for mor-or-or-or-ore)

(Mor-or-or-or-ore)

I'm looking for a vehicle, I'm looking for a ride

I'm looking for a party, I'm looking for a side

I'm looking for the treason that I knew in '65

Beware the savage jaw 

Of 1984

This song by David Bowie explains the brainwashing of people, but metaphorically. He mentions "I'm looking for a party, I'm looking for a side" much like Winston, he didn't want to side with Big Brother's party. He searched for Goldstein's party and decided to choose that side of the party. 

"They'll split your cranium and fill it with air" isn't favorite line. He is expressing how they will fill your head with useless things while brainwashing the things that they do not want you to know.