dual commando

when you and your sex partner both go commando (without undergarments) this can be a lot of fun. especially since its that much easier to get down to business.

me and my girl went dual commando when we went camping, easy access all day long

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dual wielding

Two guys jacking off in the same room (but pretending it didn't happen and/or isn't gay).

After being snubbed at the club, Ricky and Byron went back to their dorm room for a good dual wielding.

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dual rape

Not quite gang rape, but also twice as intense as rape.... basically an unauthorised Eiffel Tower

Steve: "how do you know jimmy?..... HEY, GET IN HERE JIMMY"

Jimmy: "sorry luv, this dual rape has to happen"

Girl: (obviously loves it but has to pretend that she doesn't because both are handsome bastards) "NO... DONT... STOP" then casually "no don't stop;)"

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diet dual

a contest between two women to see who can lose the most weight or be the thinnest by a given time. A diet dual may be proposed to resolve a disagreement between the contestants, much like the sword and gun duals in the days of yore.

Keira and Alessandra argued bitterly over who was sexier. Finally, they decided to settle their dispute with a diet dual. Whoever had the lowest BMI (Body Mass Index) by Valentine's Day would be declared the sexier of the two.

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celeron dual core

A dual core version of the Intel Celeron

The processor in my computer has an Intel Celeron Dual core

Dual Wheeled-ing

v. Riding exclusively two-wheeled vehicles. Derived from the videogame term Dual Wield, meaning to use two weapons at once.

my Fiero broke down, so now i'm dual wheeled-ing on the Schwinn and the Harley.

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dual-clutch gearbox

Invented by a Frenchman just before WW2 and introduced to road cars in 2003 in the Golf R32, this type of transmission is a semi-automatic gearbox - two clutches take care of two sets of gears. One clutch takes care of odd gears (1, 3, 5, 7) and the other clutch deals with the even gears (R, 2, 4, 6).

How it works:
One clutch has 1st gear engaged, with the car moving forwards. Meanwhile, the other clutch has 2nd gear ready to be engaged. Come change-up time, clutch no.1 disengages 1st and clutch no.2 engages 2nd gear and the car keeps going, whilst clutch no.1 prepares 3rd gear for engagement. All of this happens within milliseconds, so power delivery to the road is uninterrupted.

Usually - though not always - dual-clutch gearboxes are more fuel-efficient than an equivalent manual gearbox.

For more info, see Wikipedia.

"What gearbox have you got in your Audi TT?"
"Oh, I've got Audi's (VW's) dual-clutch gearbox. It's fantastic!"

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