Original: Despite some claims of a Scottish Gaelic origin , Skilton , St J. '' The Survey of Scottish Gaelic in Australia and New Zealand '' , p. 300 , quoting a respondent to his survey : '' ` Bill ' = ` bile ' = ` lip or mouth ' and ` abong ' is from ` abhainn ' = ` river ' with a parasitic ` G ' added .
Simplified: Some people say there is a Scottish Gaelic origin , Skilton , St J. '' The , p. 300 , quoting a respondent to his survey : '' Bill = bile = lip or mouth and abong is from abhainn = river with a parasitic G added .