fight over shreddies

based on the ads for Diamond Shreddies, it means to argue over things that are basically the same.

"Dude, that's a circle,"
"Naw man, it's an oval!"
" Oh, come on stop fighting over shreddies!"

"Is that a husky-terrier, or a husky-poodle?"
"Dude, it's a dog, don't fight over shreddies."