Offensive and degrading slang often connoted to refer to Chinese girls by non-Chinese perverts in Malaysia (especially Malay Muslim males). Another variation is "amoi susu" in which "susu" literally means milk - a metaphor to Chinese girls' fair skin that these perverts are always lusting. Chant this term if you'd like to have your head shoved right up your own ass.
Beautiful Chinese girl(s) walks by......
Person A: "hey dude, look at that amoi susu... wow gorgeous!!!"
Person B: "Hello amoy! u look so sexy oooh hehehe...."
*Pow! Pow! Pow! Pow! Pow!* (the sound of 2 Malay perverts getting their brown ass Kung Fooed into oblivion)