Final answer:
The phrase 'Oran off at the mouth' is an example of an idiom, which means it has a different meaning from its individual words.
Step-by-step explanation:
The phrase 'Oran off at the mouth' is an example of an idiom. An idiom is a group of words whose meaning is different from the meanings of the individual words. In this case, 'Oran off at the mouth' means that someone is talking too much or babbling. It is not to be taken literally, but rather understood figuratively.
Learn more about Idioms in English