polite term of calling somebody a jew.
A Jonporter is a worshipper of the male ''chocolate starfish'' (anus).
Jonporter is also a shade of ginger that can only be deemed as jonporter.
The original jonporter once killed a bear by simply loking at it and had suit's so fine they made sinatra look a bum and a voice that make's a wolverine pur.
Being that there hair is jonporter(slight gingerness) they can be class as the welsh answer to chuck norris.