1. When dorks & their friends get together to pretend to be ninjas by doing somersaults and kicking each other.

2. What to do at work when you're bored.

3. What people with no social lives do on the weekends.
1. Yea! It's Ninja-time!!!!!

2. Nick got fired for using work for Ninja-time.

3. So me & Julianne are gonna go to the park for Ninja-time on Saturday. Wanna come?
by ShawnTheNinja October 9, 2007
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a hot chick with ninja like moves and the sexual prowlness of a puma
dude you see that puma over there? you mean the one standing right behind you.. whoah! puma ninja
by redickulos April 24, 2011
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Someone who has the skill to touch a girls butt or "other" areas.
I'm a booty ninja, she didn't fell me tuch her butt
by Apollo4300 February 14, 2015
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When you manage to do a line of cocaine without anyone seeing you.

๐Ÿ™…๐Ÿป๐Ÿ‘ƒ๐Ÿป is the emoji used for ninja lining so no one knows what you're talking about (stealth just like a ninja)
Seal wanna go ninja lining tonight?

Or

Seal wanna ๐Ÿ™…๐Ÿป๐Ÿ‘ƒ๐Ÿป tonight?
by squidding March 16, 2016
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A virgin or someone who is 13 years old
"Did he ever have sex?"
"No, he is a Ninja Sub"
"Oooh, that explains everything"
by therealpanix December 12, 2018
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The sneakiest of nonces as they will climb in your bed as fast as they can do a play in a day in year 5. Also a predator like chef Evans
Jimmy saville is a ninja nonce because he touched six kids in a day
by Ninja kill October 30, 2018
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