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)