Could you please provide more context or information about where you encountered this phrase?
For example:
* Where did you see it? (A website, a book, a conversation, etc.)
* What was the context? (What was being discussed or shown?)
* Do you have any other information about it? (Was it part of a larger message, was it written in a specific font, etc.)
With more information, I might be able to help you understand what "Ur Leu Est" might mean.