Stands for " talk to you later" or if you're a homosexual you would say " ta ta"
First example used by the regular people, second by the homosexual or gay losers who think they're witty.
Talk to you later j. ttyl.
Ta ta you loser homosexual.
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Frank:''That was a great gym session my dude, when I get home I'll text you my secret protein shake recipe!''
Tom:''Yeah that was intense. Sounds good, ttyl!''
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