I asked this on the glee/グリー spot and a few people answer here is their 回答 :)
If Mercedes imagines あなた as any 食 what do あなた think she would imagine あなた as ?

sharpy000 -anything chocolate!!!
klaine_forever -A gummi bear!
fetchgirl2366 -Cookies and cream ice cream
piperlovegood -probably sweet-tarts
sheerika-I would be a ball of all of the sweets in the world

Thanks ! for everyone who answered my 質問 all of あなた are very SWEET ...

あなた guys are the sweet to ma Caroline !

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