202 sites have this keyword listed in their metadata, here's one you may hate:
 
  
    
    
    
      
      Are you a bad enough dude to give this a 5?
     
    
       
  Other sites with this keyword...
  
  
    
      
        | site | user | views | score | 
          | ?wtf ninja attack! | wisdumcube | 10,037 | (4.32) | 
                
          | ?The ninja stole your cloudsong. | Sand0z | 5,145 | (4.29) | 
                
          | ?Greatest Quote In Cinema History | Clodius | 3,965 | (4.18) | 
                
          | ?Chuck Norris Dead | RonW357 | 2,226 | (4.13) | 
                
          | ?Epic Battle of Pirates and Ninjas | idolwick31 | 12,726 | (4.10) | 
                
          | ?Darthwang PWNS the Ochobobo Circle Jerk | DarthWangBot | 1,058 | (4.09) | 
                
          | ?Ninja works it to the left. | NickAlexSnutch | 44,448 | (4.06) | 
                
          | ?Hassan Terrorist Video | FalconEddie | 19,577 | (4.05) | 
                
          | ?Ninja Training Camp | Omega1 | 15,496 | (4.02) | 
                
          | ?(nsfw) Ninjas dont take pacmans crack. | High-End | 12,928 | (4.02) | 
                
          | ?Ninjas train to be the BEST | Zedd | 11,032 | (4.01) | 
                
          | ?Ninjas Beyond Fads | BTape | 3,341 | (4.00) | 
                
          | ?Dave Wyndorf JUMP!!!111 | Everfrost | 5,730 | (4.00) | 
                
          | ?Hulk Takes on The Hurricane(refresh) | Snake-Plissken | 10,374 | (3.94) | 
                
          | ?Ninja, Please | ChickenSoda | 4,343 | (3.91) | 
                
          | ?Naruto Emo (The Update) | K9Platnum68 | 24,700 | (3.90) | 
                
          | ?Cosby DOESNT Address Congress | Gunndar | 6,837 | (3.89) | 
                
          | ?The age old debate... | SonOfStarman | 3,656 | (3.88) | 
                
          | ?Pirates vs Ninjas | Crake | 1,938 | (3.88) | 
                
          | ?If Velociraptors played Guitar... | DeathSentence | 19,520 | (3.87) | 
                
          | ?Ninjas Don't Change Facial Expressions (v1.1... | Flopsy | 10,000 | (3.86) | 
                
          | ?PS3 Vs Xbox360 | DYSPRAXIA | 7,577 | (3.85) | 
                
          | ?Pirates and Ninjas UNITE! | Tonfa | 4,449 | (3.85) | 
                
          | ?Bad Dudes: A tribute | FuB4R32 | 10,932 | (3.81) | 
                
          | ?Google Suggests Some Products | NemoomeN | 4,016 | (3.80) | 
                
          | ?Spot the NINJA | Shadowzan | 3,811 | (3.80) | 
                
          | ?Ninjas like to flip out and kill people. (especially pirat... | Steben | 5,878 | (3.78) | 
                
          | ?How to stop a Ninja attack | YarenZero | 2,902 | (3.76) | 
                
          | ?These are real ninjas! | kac8403 | 3,035 | (3.75) |