It comes from "Nanook Rubs It" by Frank Zappa.
That if anything bad ever happens to your eyes
As a result of some sort of conflict with anyone named Nanook
The only way you can get it fixed up
Is to go trudgin' across the tundra, mile after mile
Trudgin' across the tundra
Right down to the parish of Saint Alfonzo
That’s it! That is where I heard it, and that clever Zappa line just stuck with me, especially the way he said it, making ‘trudging’ sound like a hard struggle.