verb

to attach or adhere to something (can be either literal or figurative), like the crustacean of the same name that attaches itself to the hull of a ship
“I walked into one of those high-end stores on Rodeo Drive and I was amazed at how few products were on display. The floorspace was wide open. I guess they need all that open room to house the army of sales associates that stand ready to barnacle their lips to your keister.”
by goose_on_a_roof August 27, 2022
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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 8, 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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An individual (or individuals) whose presence is constant, annoying, unwanted and, most of all, seemingly impossible to free oneself from. The best way to avoid a Barnacle is by way of a "Barnacle Alert," typically administered by SMS or similar technological means. This serves to warn the recipient that a Barnacle is in the area and to steer clear. Barnacles are notorious for flouting the law, so overall it's best to steer clear of them.
"Oh, man, I can't believe you got stuck with the Barnacles last night!"

"Wow! You got Barnacled last night?"

"Can you believe the Barnacles turned up tonight?"

"Who did they Barnacle this time?!"
by Jackson King May 21, 2021
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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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The word used to describe a person whom waits until the very last second of a conference call to make their presence known
Sally is such a trashy barnacle! She attached herself to the weekly Webex like a parasite, adding less-than-zero value, until it came time for her to announce her presence to management!
by 16vjohnson December 11, 2018
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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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