pī te/ngā tero
1. full as a bull, can't finish, couldn't do it - an idiom to express someone's inability to complete a task.
He māmā noa iho ngā mahi i hoatu hei pīkau māna. Ka taea e te tino tamariki te mahi. Taka mai ki tērā rā, kua pī te tero (HKK 1999:102). / The tasks for her to complete were quite easy. Even children could do them. But right up to that day she couldn't do them.