Attempting to say goodbye and failing as a quick departure is made.

Missing the chance to say goodbye to someone leaving, usually witnessed by others who will tease and taunt you for it.
CyAdora failwaves at her friend who left the chatroom in a hurry. Then was made fun of for 5 minutes for being slow.

I watched my bf sitting on the bus and was waving goodbye. As I turned around I realized he missed my full moon failwave. The old man sitting next to him had a big smile as I looked back.

After I got home from the concert, I checked my mobile to see all of my friends had failwaved to me before I left.
by CyAdora September 17, 2009
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Failure has been discovered to have electromagnetic properties of its own, dubbed failwaves by top scientists in the field of failology. These failwaves often cause objects or people in the vicinity to break or malfunction, and are the reason why you never want to say "It can't possibly get any worse". Failwaves can be measured in SNAFU units, often called a "sna-u".

Used more colloquially to describe anything failure prone, failwaves describe how sucky something is.
I can tell just by looking at it that this restaurant's failwaves are off the charts.

The review I read said it measured at 33 sna-us. The waitstaff couldn't get anything right until the fifth try.
by VMK April 18, 2008
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