Riddle: What kind of coat can only be put on when wet? [10 points for best answer!]?

[♥ Auraℓ Vampirє ♤]

^_^ This should be easy enough! =D

 

[TJ]

A coat of paint

Because when its dry its won't stay =D

 

[nellygirl]

rain coat?

Paint coat

 

[daphne]

A raincoat.

 

[rendarsmith]

Paint coat

 

[lat]

Is it a coat of "paint"?