ko [tāua tāua]
1. you and me both, we/they are both the same, both of us/them, I agree - an idiom to state that two or more people share the same attribute, interests, opinion or background. This idiom can also be used to introduce a competition.
Kei te tino mōhio koe ki a ia? E mea ana koe? Ko māua māua i te whare wānanga. / Do you really know her? You bet. We were both at university together.
Rangi: Kāore aku mātua e pai ki te hunga kai mātaitai i te tahatika. Pare: Ko rātou rātou o tērā whakatupuranga (HKK 1999:181). / Rangi: My parents don't like people who eat seafood on the shore. Pare: All that generation think like that.