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A term refering to "Around the world". The only difference is the spelling. The origin of this alternative spelling came from people too lazy to say the "A" in "around".

Around the world means to engage in oral, vaginal, and anal sex in any order during the course of intercourse.
She's such a ho'. She went 'round the world with Phil on the first date.
by Michael O. November 20, 2004
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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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2
When a man is laying on his back while a woman is positioned on his penis, and the woman spins around like a top, without breaking genital contact with the man.

Also, referenced in the book "Choke" by Chuck Palahniuk.
Greg: "So... did you do it with Tina last night?"
Eugenio: "Hell yes, and she went 'round the world."
by Eugenio Formaggio January 19, 2009
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