There was a green house...
"There was a green house.
Inside the green house there was a white house
Inside the white house there was a red house.
Inside the red house there were lots of babies."
Hint: A fruit
Inside the green house there was a white house
Inside the white house there was a red house.
Inside the red house there were lots of babies."
Hint: A fruit
Watermelon
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(Source: http://www.telacommunications.com/misc/riddles.htm)