Aussie slang for Nitrous Oxide, typified by the ringing in the ears commonly experienced after a good solid huff or two.
"Things were kind of dragging until he busted out the nang-nang. Then it was on! We didn't leave that couch for two days."
by Who the fuck ever February 11, 2010
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Food; An edible pick-me-up usually desired after a long night of drinking and smoking up.

Is usually preceded by the word "some. "
Dude, let's go get some nang-nang.

Who wants to ride with me to get some nang-nang?
by John-John the Widowmaker July 21, 2004
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An imbred, feral, hick. Originating from the tune dueling banjos off movie Deliverance. (i.e. Da-na-nang-nang-nang-nang-nang-nang-nang)
That guy is a total da-nang-nang.
by 546879 October 8, 2008
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