Nah Ins

This phrase is basically when you see a hot relative and you don't wanna make it weird and sexual.

My aunt is sexy, nah ins.
Nah Ins, my cousin has a fat ass.

No Cest

When your relative is hot but you don't wanna make it feel weird. The word "Cest" Originates from the word "Incest".

"No Cest My Aunt Is Hot."