2 definitions by Ian22

Top Definition
The atomic bomb that was dropped on Nagasaki in 1945.
The Fat Man and the Little Boy was one of the many stepping stones toward the Cold War era.
by Ian22 December 05, 2006
The codename of the world's first atomic bomb which was dropped on Hiroshima on August 6, 1945.
It's ironic how they took something so terrifying as an atomic bomb and named it "Little Boy".
by Ian22 December 05, 2006

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