JAP noun2 •Initialism of Jewish-American/Jewish-Australian princess: overly materialistic and selfish young Jewish American or Australian woman.Eww, you've got to check out her creepy friends.. It's like these JAP actress sluts and some American Gladiators reject lunkhead! — 1997 •Initialism of Jewish-American/Jewish-Australian prince: overly materialistic and selfish young Jewish American or Australian man.