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A young adult (generally of the male variety) who expresses the feeling of being keen, whilst at the same time being reem.
Example 1

Guy in club: Hey look at German Phil with that girl. He's so kreem.

Girl in club: He was in the gym earlier getting reem, and now he looks keen.

Example 2

Girl to German Phil: Would you like strawberries with your kreem?
by Venezuelan Eric November 26, 2011