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The Spongebob Squarepants fanatic's way of say "shit", as in you messed up, or "damn it".
Patrick, "I lost the tickets Spongebob."

Spongebob, "Oh barnacles"
by PH34R3ST June 07, 2005
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1. A small marine organism with a shell that clings to rocks and ships.
2. A clinging or dependent person or thing
3. A large zit or scab
4. An exclimation used by Sponge Bob Square Pants meaning "shit" or "fuck"
1. Based on the number of barnacles stuck to this sunken ship, I deduce that it must have been here for a while.
2. God, I hate Henry! The little barnacle won't leave me alone!
3. Did you see the barnacle on Lisa's face?! It was huge!
4. Patrick: "I'm not actually gay, Sponge Bob."
Sponge Bob: "Oh barnacles!!"
by D-Vo January 21, 2006
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A person who attaches themselves to any living being surrounding them as a form of comfort. Cuddling, spooning and snuggling are also correct terms. A barnacle latches on to anyone in sight and does not let go.
Cheyenne: Oh hey kirsten! How are you?
*Kirsten latches on to cheyenne*
Kirsten: Now im better!
Cheyenne: Oh kirsten! You barnacle, you!
by astoldbyginger February 29, 2008
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A slut or a person who has multiple sexual partners. Biologically speaking, a barnacle can mate with multiple partners at the same time through the use of tentacles.
Mary - "Lucy just got with 5 boys at once. She's such a barnacle."
by lols_royce January 31, 2010
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Any clingy drunk at the bar who insures your misery by talking your ear off about the most inane shit you can imagine. Excuse yourself to the bathroom and leave them talking to your friends.
"Oh, shit. Here comes Kelly. Can't wait to listen to that barnacle talk about used Telecasters for 6 hours. Pardon me, I have to go to the bathroom."
by Moonwtrash October 13, 2008
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An act in which a man masturbates on a bed, and just before ejaculating, jumps up and shoots his sticky goo-nuts to a ceiling. Bonus points if the semen dangles from the ceiling and stays there.
"Yo dude. I just barnacled Jimmy's room."
"That's going to suck when he comes home..."
by Justin Herbert January 10, 2009
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Car Sales: A person with bad credit who is unable to get a car loan. A total waste of time. Too many of these customers in a month will sink the month, just like too many barnacles on a boat will sink that boat.
That last customer was a barnacle! The Finance department could not get him approved even with $2000 down
by danth666 September 17, 2009
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