It's a way to reference 9/11 particularly in a derogatory term for Muslims or any Middle Eastern person.
Bigot: ¡Uh-oh! I see the rags here come the 20/99
Me:¿What's a 20/99?
Bigot: It's a way to reference 9/11, ¿get it? 9 + 11=20
9 * 11=99
by EmJayee February 4, 2021
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