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1.
A semi dreamlike state where an opiate user slips in and out of consciousnes.
Look Frank is nodding out hard!
by Heroin user October 13, 2007
 
2.
the feeling of disorientation and loss of motor control when on heroin
ever tryed drivin a car while ure nodding?
by spongebobs drug addiction December 22, 2003
 
3.
Act of giving or receiving oral sex.

ie. blowjob
Man, she gave me some good noddings last night!

girl- Im totally down to give him some noddings!

I love noddings!
by koolduffdude December 11, 2008