mak kau hijau

Etymology
Literally "your mother is green". From a video where two boys fight and make up bizarre insults against each other. Although the in this phrase may have been nonsensical, there are various speculations regarding its definition, including "hijau" referring to virginity.

Interjection

 * 1)  An expression of contempt.

Usage notes
Although not as severe as or, this phrase is considered rude and vulgar, not to be used in public.