A female's large behind.
There are several levels of Sir Charles.
Level 1: A Normal Sir Charles - Just a great big ass
Level 2: A '93 NBA Finals Sir Charles - An incredibly shapely, gigantic ass
Level 3: A '92 Dream Team Sir Charles - The greatest ass of all-time

Derived from Charles Barkley's nickname "The Round Mound of Rebound," except in this case it's the "Round Mound You Wanna Take to Pound Town"
Kim Kardashian has a '92 Dream Team Sir Charles
by SirCharlesHunter October 2, 2012
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A great blow job. Derived from the conversation between Charles Barkley and a police officer during his now infamous DUI stop on December 31, 2008. According to the officer who wrote the report,

"He told me that he ran the stop sign because he was in a hurry to pick up the girl I saw get in the passenger seat."

The officer continues: "He asked me to admit that she was 'hot.' He asked me, 'You want the truth?' When I told him I did he said, 'I was gonna drive around the corner and get a blow job. He then explained that she had given him a 'blow job' one week earlier and said it was the best one he had ever had in his life."
Girlfriend: "tell me what you want tonight. I want to please you baby."
Boyfriend: "Baby, I want a sir Charles tonight!"
Girlfriend: "What the hell is a sir Charles?"
Boyfriend: "A BJ. Not just any BJ...but, the best one I have ever had in my life!"
by Juggernaut 12 February 19, 2009
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A Scotch drink:

a full glass of ice and half glass of The Glenlivet 18 years the choice of godfather
what would you like sir??
Let me have a Sir Charles please.
by Don di CARLOS January 30, 2008
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Really damn good weed.

Often abbreviated Sir Charles, That Charles, Charles Piffington, or just Charles.
Hey I'm going downtown to hang out with Charles

Yo I'm looking for that Charles, do you have any idea where I could find him?"

Do you know who's going to that party?
I'm not sure, but Charles will definitely be attending

Which Charles?
Sir Charles.
Sir Charles Piffington III?
Yeah, That Charles.
by dopedistributor420 April 15, 2011
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A name given to someone who fucks everything up, as in charlie (charles) foxtrot, or "clusterfuck"
sir william: hey, let me take this next guy. he's easy to kill.

a camel spyder: sure sir charles, just like last time when he killed you with a rubber duck.
by sevila117 July 2, 2010
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Simply defined as a Chucky floating inside a Larry, or otherwise a half smoked cigarette extinguished in a half drunk beer.
I was on the hunt for a Larry and a Chucky but fortunately I was able to scrounge up a Sir Charles.
by Trent A July 31, 2006
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One of the best kings so unfortunate that his mother passed away though she is a dear friend of mine and this Sir King Charles is all about making the world a better place God Bless Him!
Sir King Of Kings Sir King Charles The 3rd ... iii III lll 111 ||| !!!
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