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1.
Pingu's main method of communication.
Noot noot!
by Enw Ffug June 23, 2011
 
2.
Opposite of woot woot
We had the worst game of our lives.. Noot Noot
by Valmar & AJ November 10, 2004
 
3.
a small yet very aesthetically pleasing bottom.
A term of endearment & appreciation for your lovers behind.
"Wow, that ronny has a noot noot."
(while squeezing arse cheek of lover) "Ohhh, noot noot!"
by bronaldo September 14, 2006