look up any word, like full-donald:
 
3.
It is a sound that means nothing at all. Or it is another word for nothing!
Person 1: What the hell are you doing!

Person 2: Hiff Hiff

Perdon 1 What the hell did you say?

Person 2: Hiff Hiff! It means nothing at all!
by skykat January 26, 2005
 
1.
Etymology: Believed to be of Australian origin, describing a grunt of exertion, or perhaps a modification of "heave".

Transitive verb: "to hiff (something)":
1. To throw (something) in a cumbersome manner, often something heavy or uncooperative.
2. To dispose of something, often something that has exceeded its usefulness.

Rarely used intransitively, such as in "Dave hiffs".
"Peter hiffed the bale of hay at the cows."

"Sharon hiffed the broken toaster."
by algofoogle March 14, 2005
 
2.
The sound a particularly uncouth and socially oblivious coworker with chronic sinus issues will make while what appears to be simultaneously hocking a lugey while sniffing the drainage
If you Hiff one more time I'll shove this box of tissue up your nose
by Schoolboy January 03, 2014