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1. A food that is really tasty.
2. A person that is very sexy
1. Ice Cream is yum yum
2. Evgeni Malkin is yum yum
by Mrs. Evgeni Malkin June 5, 2009
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delecious baked cake thing,
made of puff paistry and coated in a thin glazing of iceing.
Its name is its best definition.
Person 1: i ate 3 yum yums and now i feel sick.
person 2: Dude.
by argos gold February 23, 2005
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A female character in the Gilbert and Sullivan masterpiece The Mikado. The role of Yum-Yum should be sung by a soprano.

Yum-Yum is the beautiful young ward of Ko-Ko, the Lord High Executioner, and she is preparing to be his bride when she reunites with Nanki-Poo, a childhood friend and the son of the Mikado, and falls in love with him instead. During the opera, Yum-Yum is distressed by not being able to marry her beloved, until finally Ko-Ko releases her from the engagement because he has fallen in love with Katisha.
Yum-Yum sings quite a bit during the midsection of the Mikado, but her biggest solo is "The Sun, Whose Rays."
by Pitti-Sing June 23, 2006
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Another name for marijuana. usually used in a playful or joking matter
" we finna go Cop some Yum yum for later"
by SEKT January 21, 2006
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1. A chick who gets paid to make u say YUM YUM!!!...
2. a woman who engages in sexual intercourse for money; whore; harlot nd prostitue.
IM GONNA GO TO THE YUM YUM PLACE TONIGHT!!!!
by CUCAMUNSTER July 31, 2011
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