look up any word, like spook:
 
2.
To disapprove of anything and everything even remotely related to fun, enjoyment, and laughter.
Friend: "Wanna come puddle jumping with me?!"
The Hafer: "Puddle jumping? What are you, three?"
Other Friend: "Dude, you're such a Hafer. Stop Hafering."
by The Hafer October 25, 2012
 
1.
A period of time which approximates to within 4-6 weeks in Gregorian Time. It's context is specific to generic timeframes provided by inexperienced estimators.
eg It will be delivered in a Hafer.
eg It will take a Hafer to complete.
eg That operator told me on the phone it would take Hafers of time.
by Langdon Olger January 09, 2009