hmph-k
It can be used to replace an curse word. Mostly four letter ones. Starting with an FFFFF and ending in a Duck. 
Or
A techno sound that soothes the soul. 
AAAAHHHHH you make me mad! You know what? Hmph-k you!!! That's right... Hmph-k you!

Or 

Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k ahhhhhhhhhhhh wicka wicka Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k Hmph-k ...

The end.