Top Definition
the small nearly unnoticeable laugh a ninja does on the rare occasion when he is caught. Ninjas are almost never caught, hence no one knows what a ninja giggle sounds like.
As the ninja unobtrusively snuck down the high school hallway and the assistant principal saw him, he ninja giggled
#ninja #ninjitsu #ninja scroll #ninja gaiden #ninja dust
by luckyones05 April 26, 2006
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