Words at Play : Top 10 User-Submitted Words, Vol. 5
Definition:
(noun) : conversation that seems meaningless or without logic
Example:
"There's a 45-minute wait at the bus office until our coach leaves. Billy disappears to buy water and I strike up a nonversation (smile, nod, hello, Ingalis) with a Kurdish man with a scar on his cheek, who gestures for me to play the guitar." blog post at UnPlaned.com, March 20, 2010