heat spike 

A sudden raise in body temperature that starts in the lower back and radiates up the spine as a result of realizing a major problem caused by one's own error.

Joe had a heat spike when he realized he would not meet the schedule because he had produced the wrong pieces.

heat spike by carasone March 25, 2009

heat spike 

Another way to say "taking a shit" or "dump", "poop", "crap", or "dropping anchor".

John I'll be right back I got'a drop a heat spike.
When my bitch is done at the dogpark she drops the heat spike.

heat spike by Keith Wilkinson August 21, 2007