Noodles are tasty. I like them, but why are they also used as an exclamation of dismay in the following?
It has no real origin, just something one could say any other day. My friend says "Oh, fish!", and that doesn't have an etymology or an origin either, just an expression that someone might use idiosyncratically.
I would imagine that someone using such an expression indeed does NOT like noodles. It's a euphemism. Instead of saying some sort of expletive he's cleaned his diction up and used something he thinks that would be humorous.
I approve =) I also LOVE noodles.