rainbows and unicorns
Innocent, carefree happiness. Often used in negative constructions to indicate the opposite. I know it's ugly having to see someone you cared about betray you like that, but life isn't all rainbows and unicorns. We love our daughter to bits, but things aren't all sunshine and rainbows when you're living with a newborn.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.