Mak means much, a lot. If it's really much you say Mak Mak, or just make it really a long Maaaaaak (and the listener will know you learn the way to say it from a kid).
Mai Aroi means the opposite. Kin Mai Dai is to say not edible: Kin = eat, Mai = not, Dai = can.
Aroi Maaak tae Kin Mai Dai then means it tastes good but can't eat it, hee hee. Or is it Mai Aroi tae Kin Dai?