The most uncomfortable sitting position known to man. Female members of the British Royal Family, such as Princess Diana or Kate Middleton, tend to use to protect their modesty, while the male members are allowed to sit anyway they choose. It involves sitting with the knees and ankles tightly bound and slanted to one side. Not as preferable to the Cambridge cross, which involves crossing your ankles. One can only wonder how Kate Middleton keeps up that smile in public.
Bob: We’re going to a party today, sweetie. You should use the duchess slant when you sit.

Kate: I’d rather die.
by Abba Palindrome June 12, 2018
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A woman that somehow thinks she is the gatekeeper of facts and her opinion is that of higher value than anyone and anything. They think that because they work under the CEO they should be treated like royalty.
Ruairi: Did you see Peggy's email about Cinco De Mayo?
Kyle: Yea that little Cunt Duchess just listed off facts about Mexican food. She could have at least convinced the big boss to get us a Taco Truck.
by TehPkmnMaster69696969 May 5, 2022
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A collection of fat at the base of one's neck. Formerly thought to be associated with old age. Early marker for obesity. The rounding of the back of the neck.
Is your auntie looking down at her shoes?
ANS: No. She is forced to look down because of the duchess hump on her neck.
by TallDarkandLovely April 18, 2011
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When a woman does a hand-stand, and you eat her out.
My girlfriend wants me to do the Upstairs Duchess on her, but she doesn't have that good of a balance....or a pussy.
by RaggedyMule January 14, 2012
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When your 13 year old off-spring has a wet fart or shart under thicc bed covers
"maw, I had a hot duchess in my bed"
by Halfbrainnear May 22, 2022
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a girl who is snotty, celebrity-obsessed, known to obsess over wearing 'in' clothes, boy-crazy and likes to act like they are in a Disney sitcom, except that this girl beleives herself to be a 'better person" than others. usually really into the whole "sweet valley high" thing.
girl one: I can't beleive it. Suzy Schmuzy has another boyfriend. We're only in the seventh grade!
girl two: I've been trying to tell you, she's a major bubblegum duchess.
by Amaya14 December 10, 2009
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