The Rusty Crustacean 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.
by Nick Buhlugahorn April 13, 2015
I contracted a case of the crotch crustaceans from the trousers I purchased at the Salvation Army Thrift Store. Of course the old lady just ain't buying it...
by Blenderhead91 March 31, 2009
when you have sex and your intercourse partner cums on you're vaginal area and you forget to clean up and it dries up and stays on your vagina and it hardens into a crust
by obama jesus satan kawaii queen August 22, 2014
by Javier2798 November 7, 2017
by Hot mama Hershey December 7, 2017
Otherwise known as crabs, sexual crustaceans are obtained from doing the dirty with a someone dirty. Sexual crustaceans itch at the pores of hair that are infected and can only be killed by medicated shampoo.
by Umass Lowell Leitch Basement November 22, 2009
by peepeepoopooman6969 October 22, 2019