* A playful or humorous expression: Used to acknowledge the attractiveness of two girls in a lighthearted way.
* A made-up phrase: It could be a recent invention, perhaps from social media or internet slang.
* Misremembered: It might be a distorted version of a more common phrase or saying.
If you have a specific context or source where you encountered this phrase, it might help to understand its intended meaning and origin.
Without further information, it's difficult to definitively determine its origins.