yow!
Webster's Dictionary (GCIDE)
Yow \Yow\, pron. You. [Obs.] --Chaucer. [1913 Webster]
Free On-line Dictionary of Computing
Yow!
<exclamation> /yow/ (From "Zippy the Pinhead" comics) A favoured hacker expression of humorous surprise or emphasis. "Yow! Check out what happens when you twiddle the foo option on this display hack!"
Compare gurfle. [Jargon File]
(1995-03-07)
The Jargon File
Yow! /yow/, interj.
[from “Zippy the Pinhead” comix] A favored hacker expression of humorous surprise or emphasis. “Yow! Check out what happens when you twiddle the foo option on this display hack!”.