Ah ha, well it was actually a bit of an in-joke among my friends which is why I had it up on YouTube last night...
Anyway, you can't help but mishear songs... or deliberately change them slightly.
Don't let your mum go down on me (the sun)
Take me to the Carter Bar (Clouds Above)
Don't you worry, don't you worry child, coz Heather's got a plan for you
and so on
And as for "We gotta get out of this place", I'd always assumed they had visited Galashiels...