I killed that pussy and grabbed that knife
Now I got real authentic cheetah print shit (Nigga, you're a liar)

from Odd Future (Ft. Domo Genesis, Hodgy Beats & Tyler The Creator) – Rella Lyrics on Rap Genius

Meaning

Tyler reprises some of his darker, Wolf Haley lyrics.

He is referring to “your girlfriend,” implying he is fucking the shit out of her (“killed” that “pussy”).

However, his line can also be interpreted as him killing her, skinning her, and wearing her skin as a suit (metaphorically compared to killing and skinning a cat). This bears similarities to a line off Tyler’s song “Fish:”

“Critique my chic in this brand new mink”

A final, tangential interpretation could be that he fucked the shit out of her, and then carved her vagina up.

Could also be heard as “cheater” print because dude’s girlfriend cheated on him with Tyler. So he skinned her and now has cheetah (cheater) print. She has a boyfriend referenced in the line before. “Nigga you’re a liar” could be the dubious boyfriend denying Tyler’s actions.

She could’ve also been a woman of class and he just stole her chic cheetah-print clothes…

Pussy= cat= cheetah
He could be saying “killed that pussy” as in fucked this girl with the doubled meaning of killing a cat and “grabbed that knife"skinned it know he has "that real authentic cheetah print shit”

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