clamshell anus 

A congenital deformity in which the buttocks can open up like the shells of a clam, with anus inside as a clam would be inside clamshells.

He dropped his shorts and then made everyone in the locker-room pass out from the sight of his clamshell anus.

clamshell anus by wiginpen February 15, 2004

Clamshell Packaging 

An idea that looked good on paper but actually causes more harm to the honest user rather than the intended criminal.

This sealed plastic dome causes many Americans to injure themselves in a magical rage, as there is no way to conventionally open the package with bare hands.

Even with scissors one can find themselves busting a blood vessel trying to free the product imprisoned in the case of failure.

Nathan couldn't get his headphones out of the clamshell packaging, and he resorted to biting and tearing until he split open his lip.

Clamshell Packaging by SkySandvich August 29, 2009

Clamshell Catch

A game of catch using any number of clamshell shaped individually wrapped hard candies.

My cat, Ham Perkins, wants to play clamshell catch all day!

Clamshell Catch by Blinkfish November 9, 2025

bearded clamshell 

An Australian term for vagina

Oi Show us your bearded clamshell

bearded clamshell by mt1 June 29, 2006

Oakland clamshell 

An Oakland clamshell is performed using 3 Necessary Objects, a bulldozer, a large black dildo, a box of Frosted Flakes and your local fat black woman. To proceed with this maneuver you must attach the dildo to the bulldozer (creating the dildozer) you must also make a trail leading to a location near the dildozer (leading your local black woman) and when one appears you must be ready on the dildozer and proceed to ram her anus. Then without letting her escape you must lift her using the dildozer once this maneuver has been successfully completed you must shake her on the dildo causing a violent squirting orgasm. Then this has been completed successfully.

Man 1: I finally did my first Oakland clamshell last night!

Man 2: no way, that maneuver is way to intense.

Man 1: hell yeah I did! It wasn’t easy she put up quite the fight!

Oakland clamshell by Crusty clamshell February 21, 2019

clamshail 

A descriptive tool used to describe someone's lack of opened mindedness tords any thought or subject that makes them seem or fell uncomfortable

I switched my phone to clamshail so I didn't have to deal with all of that B-S.

clamshail by dragonboy8586 September 11, 2020

Chelsea Clam Shell 

When You open your ass over someones head in a swallowing motion while they are passed out and push there head into your ass.

Cuzan johny passed out so i gave him a Chelsea Clam Shell,when he awoke he was not happy.

Chelsea Clam Shell by tbagmartin March 28, 2010