the act of saying the n-word (nigger) it's defined this because the n-word is sometimes called the n-bomb which is a nuclear bomb. Also defined this way because the n-word is one of the most offensive words in the English language and is the language equivalent of dropping a nuclear bomb.
1.Did you hear that song new lil wayne song he drops a nuke like every 30 seconds.
2 Did Brian accidentally drop a nuke in front of the only black kid in the school?
3.Michael Richards once dropped several nukes and his career suffered because of it.