Weird growths, genital warts, skin tags, mulluscum, or other STD particles that occur with skin to skin contact usually pertaining to the areas not protected by a condom.
Even with protected sex it takes time for the barnacles to start to grow.

Chick: "You know that guy is packing hamburger meat with barnacles."

Chick 2: "He and his barnacles can keep their distance."
by sexylady111 September 27, 2012
Top Definition
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
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
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
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
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
unwanted dudes that dance on chics, often times these dudes are foreigners or black guys. These guys just latch on and don't let go, they will follow girls off the dance floor and all around the club. Can also be called dingleberrys.
There were a bunch of barnacles on this one cock tease, who was dancing on the dance floor. You could tell she didnt like this dance floor gangbang.
by Big Pimping January 04, 2008
A person who attaches to you and is extremely clingy.
Uh oh, here comes the barnacle.
by blackgirl68 March 10, 2015

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