karawhiua atu
1. go ahead and do it then, go ahead then, go on then, go for it, give it heaps - an idiom used to warn someone that if they go ahead and do something problems will result. Sometimes said to someone who will not listen or take advice.
Kua roa mātou e kī ana he taniwha kei tēnā wāhanga o te awa, engari kei te hiahia tonu koe ki te haere ki reira hī tuna ai. Ā kāti, karawhiua atu. / We have been saying that there is a taniwha in that part of the river, but you still want to go there and fish for eels. Well, go and do it then.