wet back(redirected from wet them back)
To apply water or another liquid to something, especially hair, in order to make it remain lying flat. A noun or pronoun can be used between "wet" and "back." My mom made me wet my hair back for the school photographs. He wetted the decals back with a sticky substance to stop them from peeling up from the side of the car.
To cause something to lie flat by making it wet and brushing it back: Now that I have short hair, I have to wet it back or it stands on end. I washed my face and wet back my hair.