When one comes up behind someone and clandestinely humps them for a short period of time, and disappears before the humpee knows what has happened... Like a ninja...
Oh my God! At the French Creek trip, Dijon Berlin came up behind Jane Smith while she was dancing and ninja-humped the shit out of her.
by IO Echo August 4, 2009
Get the Ninja-humpmug. An exclamation of satisfaction with one's self for having caught something just dropped.
Though ninjas obviously never drop anything, this is how they would drop things (and what they would proclaim) if they were capable of doing so.
The feelings of alertness and dexterity associated with the drop/catch action preceding the "Ninja Drop!" stand
in stark contrast to the inattention and clumsiness that led to the exclamation in the first place.
Though ninjas obviously never drop anything, this is how they would drop things (and what they would proclaim) if they were capable of doing so.
The feelings of alertness and dexterity associated with the drop/catch action preceding the "Ninja Drop!" stand
in stark contrast to the inattention and clumsiness that led to the exclamation in the first place.
by CainFang September 27, 2010
Get the Ninja Dropmug. 
abs that are hidden and only appear when it is necessary; in other words, an excuse for not having abs
by flowhawk22 October 12, 2010
Get the ninja absmug. Tuna: I heard you got busted with some blow and are looking at 5 years bro.
George: Don’t worry, I’ll be ok. My attorney is a legal ninja.
George: Don’t worry, I’ll be ok. My attorney is a legal ninja.
by Lawdog April 8, 2020
Get the Legal ninjamug. The verb describing the unpleasant movement of hitting ones scrotum from behind them, most often used when someone has their legs spread awkwardly apart.
by J.P.Hades May 14, 2009
Get the Ninja Yankedmug. What you desperately need but can't find when you are failing miserably at any Ninja Gaiden game for PS3
Guy 1: Ahhhh this game is so hard what do I do!?!?!
Guy 2: I would offer you some Ninja Gaidance but I don't have a fucking clue.
Guy 2: I would offer you some Ninja Gaidance but I don't have a fucking clue.
by Ultrafiend101 December 4, 2010
Get the Ninja Gaidancemug.