Archaic expression, used in many trades to mean 'spot on', or absolutely accurate. It originates from the times when machinsts machines were set with a set of nuts, on a fine threaded screw inside the machine which controled it's movements to and froe. The nut would be set at absolute zero, or the stop, or limit of the machine. When the nut was tightened, and the zero set, it would be considered a dead nut.
by D. Cypher May 30, 2017
When you've had so much sex, your balls cannot physically release any more semen until they recover.
by BonsaiSteve July 6, 2018
by nemo storm July 14, 2011
by jimmyjoemickeychuck June 21, 2009
by Nate Pesci July 12, 2006
by Denis Baldwin February 3, 2004
by BassMan69 July 29, 2010