1) I`m out 1) American young adult novel 2) Relative of ttyl 
TTFN is an initialism for a colloquial valediction, ta ta for now, based on `ta ta`, an informal `goodbye`, approximately equivalent to `bye bye`. 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 th...
Ta Ta For Now, details ...
Ta Ta For Now
ta ta for now
(In SMS-language:) ta ta for now