Significant Figures, a concentrated method of torture for forgetful chemistry students. Sig Figs are usually encountered alongside the expression "Fuckin' Sig Figs." Also known as Sig Fags.
A scientific approximation for the number of niggers in a given location
Albert: This place looks kind of sketch. How many nig figs?
Sanjit: According to my calculations, there are 10,001.5 of them
Albert: Shit. I think my bike just got stolen