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1.
TLI
Abbreviation for 'Too little information' ; lack of relevant information pertaining to a subject.

Antonyms: TMI - 'Too much information'
"Damon and Sob woke up one morning in the same bed after a rough night in the town."

..."TLI!"
by akmoney October 01, 2007
 
2.
TLI
Too Little Information. The reason why most Facebook and Twitter updates are useless. People forget to provide context for their messages. Next time someone sends the ubiquitous status update: "This is soooooo much fun!" Response: TLI. See undershare.
Girl 1: Jill sent the most random text message to me last night; it just said, "wish you were here."
Girl 2: Where was she?!
Girl 1: I have no idea! TLI!
by Chuco the driver January 17, 2011
 
3.
TLI
TLI - Todays Lesson Is

a beautiful way to explain what your going to learn!

BUT!

(dot.dot.dot)

IN SHORT FORM :O
TLI all about how the penis meets the vagina.

(amazing story)
by The Boob Doctor July 10, 2011