The act of masturbation with a twist.
Step one: Sit on your hand till it falls asleep .
Step two: beat your meat or slap your slit.
That chick was so hot I think I need to go numby off.
by notandrew September 17, 2007
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1)a stupid person.2)someone who is constantly messing up.
Tim is always burning the food, what a numbi!
by Topher the M March 7, 2005
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A nickname for Embassy No.1, a popular cigarette brand, particularly in the North of England.
"I'll have a pack of 20 numbies cheers mate".
by Andy Of Andy Hall July 24, 2005
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Short for the word 'number' when referring to a joint, spliff, reefer, cannabis cigarette etc but can also refer just generally to marijuana.
Wrap up another little numbie bro, I wanna get blaaaaazed!!

Yo does anyone know where I can get some numbies?
by Poopy Pants McGavin August 29, 2010
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A sexual act in which two consenting males (of legal or illegal age) sit on their hands until they become numb. When both achieve sufficient stiffness of their penis they simultaneously jerk each other off until the point of ejaculation. At this point both loads of cum are then blasted into each others faces.

This game can be played by oneself, but is usually referred to as the strange in such cases.
My little brother woke up and said his hand was asleep so I sat on my hand for a while and put our sleeping hands to use and played numby dicks all morning.

I would die to have played numby dicks with Simon Birch.
by H.i.sd September 7, 2010
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The act of putting cocaine in ones inner rectum. Causeing numbness.
I gave my cat a butt numby!
or
Butt Numbies are my cats favorite!
by Jayme B. Thompson May 27, 2011
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Dirty or well-thumbed bank notes. Denotes bank notes that have been stored in a lady's brassiere (i.e. near her numbis or breasts) for safe-keeping from pickpockets and muggers. They are usually produced from said brassiere when the owner needs to pay for something larger than a chappie (chewing gum), and are characterised by being dirty and somewhat damp.
The cashier handed me numbi-notes when she gave me my change, and I almost didn't want to accept it.
by Hilary D September 12, 2007
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