What does Yu jus dash mi weh so mean?

The phrase "Yu jus dash mi weh so" is a Jamaican Patois expression that translates to "You just left me alone like that?" in standard English.

Here's a breakdown:

* Yu: You

* Jus: Just

* Dash: Leave (in a sudden or abrupt way)

* Mi: Me

* Weh: Alone

* So: Like that

It implies a sense of hurt or abandonment, as if the person being spoken to has left the speaker feeling alone and unwanted. It can also be used in a playful way, to tease someone for leaving without saying goodbye or to make them feel guilty for leaving someone behind.