"Dingo dango" is a phrase, when spoken over an aviation channel, is allowed to be uttered by only flight instructors to other flight instructors. The meaning is similar to saying "ok, sounds good!"
Air to air conversation between flight instructors:
Pilot 1: "When I get on the ground I'll meet you for lunch."
Excessive sand on and within the scrotum of male individual.
Alex - "G i went to Newquay at the weekend and now I have a right sandy dango"
Court's - "I feel that man, I've had my fair share of sandy dango. Almost fell off!"
Rango Dango's origin dates back to native English speakers confusing Dutch nationals. The Dutch are very confident in their English, however, Rango-Dango can only be defined recursively. Ie. Rango Dango must be explained using the term Rango Dango which breaks several rules of Dutch logic and practicality.
Rango Dangos is often said when you get the happy feeling of a group of friends leaving for a party together, beginning to prepare to cook dinner or even cycling through three green lights without catching a red.
It's also possible to Dango before you Rango which typcially ends in injury or embarressment.