My best guesses are:
"Waylon Grabbed A Fork"
"Who's Got A File"
"Whoa, Good Air Flight"
"Wrong! Guess Again, Fool"

Waylon's Game Alias File?

Wigglin' gigglin' and fiddlin'.

edit: fine. it was pointed out to me that "and" wouldn't make it into the acronym.
So here are some more I thought of!

Whales Grab Aisle Foods
Wafer Gears Ate France
Waiters Grate Aegean Fish
Wiffle Graduates Aim Far

"Who Gives A F***" -FiReMaGe

Thats what I always thought Celkan ;)

Waylon Got Another Flamingo

"Wheeeee, Great Another File"

"We Get Along Fine"

"We Generate Animal Farts"

Well you did ask.

"We at Guild Are Fanatics"

Wet Girls Are Fun

Wyoming Grants All Fears

congrats to post 27572, the palindrome, red cactus

wgaf: We Got A File

Welch's Grape and Apricot Fruitdrink
What Games Are Fun?
When Giraffes Are Flying
Women Girls A... Females (Damn, I don't have a synonym for female that begins with A)

What goes after F ?

Akan: "Aeternalis" perhaps? :P Just kidding.

What's Good About Fxxxxx

Darn forgot what I wanted to type .... was it Farting, Flying, Flaming, Flunking, Faking, Fudging ... ahh whatever .. choose one

DIVE

Wgaf is Genuinely not an Acronym, Fool

Sinclair, acronyms don't use the acronym itself in the full spelling-out.

Wgaf is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool is Genuinely not an Acronym, Fool ad infinitem.

What's wrong with recursive acronyms Celkan?

mmm nevermind...

Celkan has evidently never heard of GNU :)

c.f. http://en.wikipedia.org/wiki/Recursive_acronym

Lol Sinclaire, i was going to say the same thing, hehe.