The name originated from the first 10 Japanese numbers. 1 is Ich which relates to the STI's. 10 is Jew, and there are 10 factors to being an Ichy Jew.
*The Japanese numbers are not spelt like that it is just the sound.
"Eeeww she is such an Ichy Jew!"
"OMG did you here about (name)?"
"No? Whats up?"
"Aparently she's an Ichy Jew"
"*Gasp* No way?!"