The most selfish person around. He hides when he's getting attacked and attacks other people for fun. Hence the term half shell.
Man, Cody is such a half shelled bitch. He told that depressed kid to die and when he got all the hate he played victim.
by electrocaine September 3, 2018
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A person who is not afraid to show their inhibitions, while maintaining their corky demeanor.
A penelope in a half shell could be a person who does a sand crab walk as their greeting.
by Molly and Bridget July 31, 2008
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Q) Why did God create armadillo's?

A) So rednecks could have possum on the half shell.
by Ken Gman March 5, 2008
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A lawn decoration consisting of a statue of the virgin Mary inside a half-buried bathtub painted sky blue inside. Also known as a bathtub Madonna it is a miniature shrine displaying the owner's devotion to the virgin Mary. While not as bad as a pink flamingo, it is considered by some to be some to be an icon of poor taste.
The new neighbors must be Catholic, they planted a Mary on the half shell on the lawn.
by RollingBlock December 20, 2018
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when you turn a girls head to the side and dump a load of jizz in her ear.
would you like me to provide you with your own oyster on the half shell ?
by whitepar August 22, 2015
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Normally, Oyster in a Half Shell is taken to mean a food dish. However, the extended and additional definition of that expression leads to that of the sexual nature. Now, it is also a phrase that denotes when a male ejaculates onto, or, into a woman's palm after she causes such an incident to occur after performing digital sex, or more commonly known as a hand job. Although it is basically understood that this refers to the same regarding prostitution, many non-professional women, married and unmarried, call it the same thing. Boasting by men about the act often occurs, somewhat like a badge of recognition, et al.,.
Hooker After Satisfying a Client: "Wow! He howled when I jerked him off and I ended up with an 'oyster in a half shell'!"

A Conferring Couple After Intercourse: "I loved it, dear! Your 'oyster in a half shell' was great!!" said Linda.

Man Who is a Legend in his Own Mind: "Yeah, I'm the man! Just did that girl. She then rubbed me off. Talk about 'oyster in a half shell'! There was so much cum that she's thinking about suing me because it slid off the sides of her hands and onto her expensive carpet!"
by Mike in Aurora, Colorado May 21, 2008
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The regional term specific to Philadelphia, NY for the ring-shaped bread product more commonly known as a bagel. The usage of the term was popularized by Collegehumor.com.
I love a Jibbly John on the Half Shell with a shmear of cream cheese in the morning (Go Phillies!).

Give me a couple of those Jibbly Johns on the Half Shell (Go Phillies!).
by Jammich May 3, 2011
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