The Brief: The phrase "gorilla grip" is used to describe the degree of tightness of a woman's vaginal walls and often refers to their desirability.

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Gorilla grip is a phrase used to describe the degree of tightness of a woman’s vaginal walls. It is likened to the firm grasp of a gorilla’s hand. The full phrase is “gorilla grip coochie.”
When used in slang and music, the phrase often refers to the desirability of a woman implying the tighter the better.
I started to feel sad, and then I remembered I have this gorilla grip coochie and I knew it was going to be a good day. π
— ShutupAngel πͺ (@AngelKnivez) February 1, 2021
In May 2020, young women on TikTok took part in a Gorilla Grip Bottle Cap challenge. FYI, they were actually using their hands.
@laurensoyung donβt mess with dat gorilla grip! #fyp #gorillagrip #bottlecapchallenge
β¬ Theme from “Twilight (Bella’s Lullaby)” – Movie Sounds Unlimited