TTFN
TTFN is an initialism for a colloquial valediction, "ta ta for now", based on "", an informal "goodbye". The expression came to prominence in the UK during the Second World War. Used by the military, it was frequently heard by the British public.

"Ta-ta for now" was brought into popular use in the UK in 1940 in the weekly radio comedy "It's That Man Again" by the character Mrs Mopp, who ended every scene with it. During the second series, the show's name was shortened to "ITMA", to satirize the abundance of abbreviations that were becoming common knowledge due to the ongoing war.

In the 1966 "Batman" television episode "Better Luck Next Time", Catwoman (played by the actress Julie Newmar) states "TTFN" in a microphone to Batman (Adam West) while he is high upon a wall while being stalked by her tiger, Tinkerbell, and then she has to further explain the meaning of the acronym to the puzzled Batman.

In "Winnie the Pooh and the Blustery Day", a 1968 Disney featurette, the voice of Tigger was performed by Paul Winchell, whose wife Jean Freeman suggested that he ad-lib the line. It was further used by Tigger in "The New Adventures of Winnie the Pooh" (1988–1991), often followed by a "hoo hoo hoo hoo!" as he bounces away on his tail. However, the phrase does not appear in the original books by A. A. Milne.

Tim Horton, the deceased professional hockey player and founder of the Tim Horton's Doughnut chain, has "TTFN" on his grave stone.

On the sitcom, "Bewitched", the character Endora used the phrase TTFN before vanishing into thin air. 

"Ta ta for now" caught on with the British public so much that it was often uttered by dying people as their last words. It has been the catchphrase of radio personalities such as Jimmy Young, who modified it to BFN: "Bye for now".

TTFN is still used in online chat such as IRC and MUDs.
Q101244
initialism
Concept
Q901711
colloquial
Concept
Q15076965
valediction
Concept
Q145
UK
LOC
Q362
Second World War
EVE
Q8473
military
Concept
Q13569877
It's That Man Again
MEDIA
Q1247201
Batman
MEDIA
Q158952
Catwoman
MEDIA
Q237221
Julie Newmar
Concept
Q351156
Adam West
PER
Q1378605
Winnie the Pooh and the Blustery Day
MEDIA
Q4446039
Tigger
MEDIA
Q731316
Paul Winchell
PER
Q310735
ad-lib
Concept
Q1470724
The New Adventures of Winnie the Pooh
MEDIA
Q207036
A. A. Milne
PER
Q1345631
Tim Horton
PER
Q1044635
Bewitched
MEDIA
Q1689479
Jimmy Young
PER
Q73
IRC
MEDIA
Q751424
MUD
Concept
Q7671947
TTFN
MEDIA
Q7671947
TTFN
MEDIA
Q7671947
TTFN
MEDIA
Q7671947
TTFN
MEDIA
Q7671947
TTFN
MEDIA
1940-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1940
DATE
1966-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1966
DATE
1968-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1968
DATE
+1988^^http://www.w3.org/2001/XMLSchema#decimal
1988
NUMBER
+1991^^http://www.w3.org/2001/XMLSchema#decimal
1991
NUMBER
instance of
part of
cast member
director
characters
performer
notable work
voice actor