Someone sitting in the stall next to you whom you never hear until the toilet flushes, the sink goes off or just the bathroom door open and close.
Jim heard what I said about him in the bathroom; damn he must be a stall ninja!
Term that describes someone who sees people not as individuals but rather as representatives of the demographic group they belong to based on race, ethnicity, sexual orientation, and so on
^ My gay friend, Naomi, who is black and Latina, got the results of her DNA test back today and found out she is 1/64 Native American!
> Yeah? So what?
^ So what? The little Diversity Ninja inside me is excited for her. That's what's "So what". Duh!
> Oh...
A woman sneaking under the radar and by not shaving her genitaler for over week.
Barry, your stubble would be like Velcro on an half shaven Ninja minge.
Bread, that is eaten with pasta, and is thrown in a ninja-like fashion across the table aimed at people, to which effect, people jump up in an attempt to escape in a similar way to which monkeys would.
The aim of this tool is to kill... no one will be left alive!
Suffer my Ninja Monkey Death Bread!!!
A handshake involving many complex movements, but no one ever sees it because, as mentioned in the title, it is considered to be ninja-like, therefore cannot be seen.
Did you see their handshake?!
Of course not; it's a ninja handshake.
The act of logging onto a social networking site and rapidly liking a status/post before immediately leaving the website.
Not to be confused with Ninja-like
"Dude, she's not online. She just ninja liked your status, that's all."
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