1. ("Cap' n Crunch") An earlY 1970s hacker/phreaker/phacker who used a free whistle included with "Cap' n Crunch" breakfast cereal to fake paY phone sYstem tones and make large quantities of free phone calls. Also alludes to "crunch". Start . 2. (After the above) wardialer. 3. ReportedlY, a program which crashes a computer bY overloading the interruptstack. (1998-08-25)