Little green Shrek raviolis

A mass delusion. Many Australians have distinct memories of little green Shrek raviolis. Some cases also include delusions of little green Shrek tongs specifically used for eating the raviolis.

"are you thinking about the little green Shrek raviolis again?"
"Yeah, I just can't get them out of my head, they feel so real, y'know?"

little green apples

1. A math term used to describe small spherical objects

2. Tiny green fruits
3. Can be used in a phrase to describe happiness

Doesn't that just frost your little green apples