can anyone explain origin of this to me?

88 : 8 stands for the eigth letter of the alphabet, which is H. 88=HH=Heil Hitler

14 refers to the so called "14 words", which is an American Nazi slogan "We must secure the existence of our people and a future for white children".

 

Less popular is 18, which stands for AH=Adolf Hitler.

at last i see, thank you

You're welcome, Dönerfren.

I thought 14 words was "Because the beauty of the white Aryan woman must not disappear from this earth"

There are different versions of the 14 words.

https://voca.ro/16pSEqNHyTIJ