[SpoilerAlert]

Sometimes they sing the words differently. I've noticed other bands doing this.

I.E. "refresherator" instead of "refrigerator" on "I Want My MTV" by Dire Straits.

[grzm]

Are you sure you're not just mishearing this? (And the song is "Money for Nothing", by the way.)

https://en.wikipedia.org/wiki/Money_for_Nothing_(song)