its a swear word that only certain people use. It is used to mock the people with the surname mok. It is mostly used by people who have a dig bick.
mok you
what the mok
piece of mok
etc

although a Mok refers to a man with a large penis it was used to refer to a certain group of people at one time. Some time B4 Christ, the Jews exiled a group of people they referred to as Moks. On there departure the towns people lined up in the streets and would poke fun at the Moks hence the word "mocking". Later conflict would arise between the two group but many ancient history leaves these invents untouched due to there graphic and insignificant outcomes.

The noisy and raucous exchange between one or more crows and one or more cows.

An extremely unsanitory version of the dirty sanchez which involves the use of a donkey, three whores, a rubber chicken, and a midget. This form is very rare and only used in extreme situations. It was founded after an epic moment in Mrs. Mok's bed.

Used in South Africa, meaning to vomit.

Mok is used in Austalia as a synonym for dogass

resulting occurrence after premature ejaculation; burning, oozing sensation lacking male semen