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1.
Somebody who is so slow, dense and vacuous that they are easily compared to the stationary parasitic marine organism (used in Spongebob Squarepants)
"Josie is such a barnacle-head, she got an 800 on the SAT's."
by TheBrad June 05, 2007

Words related to barnacle-head

barnacle dummy head idiot imbicile stupid