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1.
DTI
Dress to Impress.

Wear your outfit with style, don't come knocking on the door in an overall, hillbilly.
Come to my party. BYOB & DTI.
by Anna_ May 22, 2007
 
2.
DTI
Digitally transmitted infection: A sexual infection of your computer caused by the viewing of pornography without proper protection (antivirus programs).
Lil: "Ah shit my computer is so slow!"

Simon: "Maybe it's a DTI, you should stop looking at porn, you dirty giiiirl."
by SexDoc October 22, 2010
 
3.
Stands for: Don't Take it Seriously.
Dude, DTIS. :/
by pseudae July 09, 2009
 
4.
"don't try it!"
Terry Sue: Queen are you still sober?
Minx: Oh yes, I went to a meeting last night?
Terry Sue: D.T.I girl, we saw you drunk as skunk on the corner trying to turn a trick!!
by thecorndogwalker December 12, 2011
 
5.
DTI
Acronym for Down To Interview. This is used by those in the broadcasting industry when reporters are trying to find interviews for their story. Most times it can be difficult, so there are some people who are your "go to" people because they're always willing to comment on a story and do an interview. They're typically politicians, city officials, doctors, etc.
Reporter: I can't get anybody to talk to me about the flu vaccine shortage.
Producer: Have you talked to Mary at the county health department? She's always DTI.

Reporter: I wonder what's going to happen now that the mayor resigned because of his scandal.
News Director: Talk to councilman Johnson. He's DTI. He'll always comment on everything.
by Grand Junction December 13, 2013
 
6.
Don't Take It Seriously.

This is the cooler, hipper, fresher to death, more badass big brother of JK.
Your mom is a whore....DTIS!
by apup/jho June 09, 2011
 
7.
DTI
an acronym meaning "Drink Through It"
Lauren: Are you still sick?

Joe: Yeah...I'll be all right, I just need a little sleep and I can DTI
by oh my gosh...i need a name July 21, 2008