Fniff 

to frivolously sniff; happily sniff; sniff with enthusiasm.

omfg! stop fniffing me! its really annoying!!!

Fniff by nickerbockerglory8 June 28, 2010

FIFF 

Finally It's Fucking Friday!

FIFF!

I know what you mean.

FIFF by Petre Dish January 24, 2014

Fliff 

Slang term for money, especially money cast about in a casual manner, such as when buying rounds of drinks for people you don't know or even dislike, just to make yourself feel like the life of the party.

Seems to have been invented by comic genious brad neely.

"Professor Brother was the life of the science department's big Oppenheimer piñata party. That is, until the fliff throwing came to an abrupt end."

"A true Patriarch knows how to rock out with his fliff out."

Fliff by Patriarch917 June 20, 2007

Fiffing 

Like yiffing but with frogsonas instead:
The act of froggy fun ranging from sexual interactions to erotic experiences.
A frogsona is used within the experiences. (a persona which the person is a frog related)

Guy1 - "You aren't into yiffing are you?"

Guy2 - "Nah man i'm into fiffing."

Fiffing by Sloppy The Loppy, Froppy May 27, 2018

fnaffle 

The act of exhaling a sneeze into a womans vagina whilst going down on her. This is usually accompanied by lots of apologies as it was an accident but y'know, some people are into that sorta thing.

Lucy: "James totally fnaffled me last night!"

Friend:"No way! Ergh I hate it when that happens, you have to put a tissue on a stick and pick the bogeys out"

fnaffle by ItsKinky 8) April 23, 2011

Fiffle 

The name in which a puppy is called.

Maddi: Come here you sexy little fiffle
Dali:*runs towards maddi*

Fiffle by MooMooBigady August 15, 2011

Captain Fwiffo 

A green alien with a tendency to get frightened at the drop of a pencil.

Hunam 1: Did you see Captain Fwiffo ride that roller coaster? What a baby!
Hunam 2: I know right!

Captain Fwiffo by 541l0rl34f March 1, 2018