A bampin is short for the Dutch "boterham met pindakaas", meaning a peanutbutter sandwich. Boterham is often affectionately called a "bammetje", which is turn is abbreviated to "bam". "Pin" clearly speaks for itself.
A person (usually a girl) who is so obese that one may wonder how a person could let themselves get that big. These people tend to have a spherical/ elliptical shaping because of the incredible amount of fat tissue that eliminates the natural curves of a human being.
**Balumpabump walks in**
Person 1: Oh my lord. Look at her
Person 2: Wow what a balumpabump
Person 1: How could a person let themselves turn into that
"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.