The RustyCrustacean is a sexual act where; a female lays on her back and her partner puts their thumb inside the vagina and four remaining fingers inside the anus of the female. Then, the partner squeezes their fingers together (reenacting the movement a crustacean's claws make when closing) causing fluctuation of the vaginal and anal region of the female. Maximum pleasure is promised if performed correctly.
LISTEN HERE YOU CRUSTACEOUSCHEAPSKATE, SQUIDWARD'S BEEN LIVING IN MY HOUSE DRIVING ME CRAZY AND YOU'RE NOT GONNA HIRE HIM BACK ALL BECAUSE OF A STUPID DIME?