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!".

[glossary]
[Reference(s) to this entry by made by: {gnarly}]