"Barmp" is a a Newfoundland term which is synonymous with "(to) honk your horn" and any other such variations of the word. Often times, however, the word is associated with being angry, so you may only "barmp your horn," if you were experiencing a bout of road rage.
It's a Newfoundland term, which is, more or less, synonymous with the verb "(to) scratch." This term, however, is not used as broadly. Instead, "(to) scrob" is most commonly used when referring to the action of scratching a person.