There is an old expression, “Spilling the Beans”. It refers to divulging private or secret information. It is not a Rhino phrase.
That is because 1) Rhinos don’t have many secrets since all our shared info is by Scent, and 2) If Rhinos spilled any beans, We would eat them up, probably before they hit the ground..
Seems simple, once it’s been explained, right?