by Zoë Pollock
It's called cryptophasia. Jon Lackman explains how it can be cute (see the wildly popular video above) but, if left to its own devices, can hamper socialization:
Oxford neuropsychologist Dorothy Bishop told me that twins generally get less intervention from speech therapists than nontwins. "People often assume that it's normal for twins to have funny language, and so they don't get a proper assessment and diagnosis. And then, when they are identified, they are often treated together as a unit, and so each gets half the attention of the professionals working with them."
The Dish 