Someone that only thinks about themself. It's basically calling someone selfish, but more redundant.
Gary: Dude, can I have some cigarettes?
John: No! They're all mine! Fuck off!
Gary: Dude, fine. Y'don't need to be a selfish shellfish about it. Fuck.
John: No! They're all mine! Fuck off!
Gary: Dude, fine. Y'don't need to be a selfish shellfish about it. Fuck.
by YapmelkXela October 15, 2009
Hey Larry I just ripped off that dudes claw.....Yeah give me some, nope. You asshole you are a selfish shellfish....
Mr. Crabs: I got me some more money.
Sponge Bob: My Crabs can I have a raise, Nope sorry Sponge Bob.
Plankton: If you can steal Eugene Crabs recipe. If you can get me that recipe Spongebob I will give you a dollar.
Sponge Bob: Oh sorry Plankton, I couldn't do that to Mr. Crabs, he is just a selfish shellfish.
Mr. Crabs: I got me some more money.
Sponge Bob: My Crabs can I have a raise, Nope sorry Sponge Bob.
Plankton: If you can steal Eugene Crabs recipe. If you can get me that recipe Spongebob I will give you a dollar.
Sponge Bob: Oh sorry Plankton, I couldn't do that to Mr. Crabs, he is just a selfish shellfish.
by Looney Larry January 31, 2010