To make an Eng judgment based on (MAO's)infer and deduce from the essay,please.
The Mao essay briefly says:-
To draw liquid into the mouth by using the tongue,lips and muscles at the side of the mouth, with the lips tightened into a small hole
Suck means to hold (her) with hands in the mouth and move one's tongue against it esp., so as to brush and swallow it.
eg:-He took a suck at her warm " private part'="under part",下流淫MAO面.