Answer:
The little pink nub that helps rectify mistakes.
I am the yellow hem of the sea's blue skirt.
You fill it and it empties, A metaphor for plenty, Depending on what half you see, It's either full or empty
These are believed to be found at the end of rainbows
Never ahead, ever behind, yet flying swiftly pastΝΎ For a child I last forever, for adults I'm gone too fast.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.