Work you do on a assignment well before it is due. This works is done so that the bufferworker can procrastinate for a longer period of time.
John "We have that really big assignment due on Friday and it is already Monday"
Jake "Suck to be you. I already bufferworked sixty percent of my assignment now I can start on Wednesday"
John "Damn I better get started or I will never get done"
Jake "I'm going to use my spare time to play Xbox"
John "Don't rub it in"