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Genitalia area. Referring to primarily the penis. Usually said while pointing to or suggesting towards the crotch.

Made famous on American Dad by Stan.
"Maybe tonight I'll introduce her to THE THICKNESS!"
by xCosmicWizardx February 08, 2012
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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When i give your mom the THICKNESS!!!! mean i give her a hot dicking
dude i set that bitch down...

dude i set your mom down on the THICKNESS!!!!!
by bigg willie January 23, 2012
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