A two cupped object, that is quite known. It's a juggling game that you can impress people and score girls with. :)
Boy plays diabolo*
Girl1: OMG hes so hot!
Girl2: I wanna date him!
Girl1: He's MINE!
Boy: Thats the way you do it! *shines teeth*
by Ninjaboy14 October 17, 2006
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A giant yo-yo usually about 5 inches across that can leave the string. Some beleave it is what happened when a drunk yo-yo and a horny pair of devil sticks got together. Many people who have never done it before think it's simple or will tell you to do things that are imposible.
I diaboloed for little kids once and accedentally killed him.

Hey, toss the diabolo up and to 2 back flips and catch it with your teeth.
by DJ Ethos October 22, 2006
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someone who likes to lame, flames because he is sexually frustrated and sux in games like tfc.
RastaDiabolos
by Anonymous April 8, 2003
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DD Diabolo Day is May 22nd every year. this is the worst day of the year where all the bad and evil stuff is likely plan out or start to sprout from a seed after being nurture and frown upon for some time. this is the day all the curses thought of, and superstitions and everything that create bad luck. the day mirrors are made on but trust me...nothing is trace back to this day. its clever range through out time waiting for its chance to shine in its darkness. people thought making everyone stay home on this day would solve it but no that gave people too much time to think. this is also the day the prison system and slave system was made up . so now everyone who is a slave and prisoner lives a diabolo day forever planning evil because this evil was done to them even if they are freed and compensated. don't take back what was lost especially reputation and fame and glory. no remedy is known yet. the day Transylvania was built the birthplace of mad scientist. even people who try to bring dead people back to life and made what they call today zombies. Diabolo Day is DD or double D for short
its no safe way to deal with Diabolo Day.
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