koirā anake te mahi e pahawa i a [koe]
1. that's all you're good for - an idiomatic expression.
Engari hoki ki te whai noa iho ētahi i te tauira a ngā reo irirangi Pākehā, mēnā koirā anake te mahi e pahawa i a rātou, hei aha hoki i hoatu ai tētahi 'aratuku Māori' ki a rātou (HM 2/1993:4). / But also if some just follow the example of Pākehā radio, if that's all they're good for, then let's not bother giving them a Māori radio frequency.