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A person who goes on DLS (the thread Dirty Little Secrets on GaiaOnline inspired by Frank Warren's PostSecret books) and lets out their feelings and secrets there.
Did you see that DLSer yesterday? He was pretty sad and posting some depressing secrets.
DLSer by Lushhh. January 6, 2008
DLST is an acronym for "Dirty Little Slut Tattoo". This specifically refers to a tattoo found on the lower back of a female. The tattoo generally consists of a celestial object or a decorative horizontal pattern on the external lumbar area, slightly above the sacrum. Such a tattoo obviously has no use to the owner and can only be enjoyed by someone else from behind.
" Did you see the new DLST that Britney Spears is sporting? What a white trash whore!"

"That chick most certainly takes it in the ass... Check out that DLST."
DLST by KungFuJesus August 27, 2005
Short for "Dirty Little Secret"

Self-explanatory. A secret thing (such as a love affair, or shameful thought) that you don't want anybody to know. The phrase was popularized by the song "Dirty Little Secret" by the All-American Rejects.
Yeah, we see each other every week and my wife doesn't know. She's my DLS.
DLS by justlookin January 13, 2009

DLS (dirty little slut)

when you act promiscuous, petty, spiteful, overbearing, rude, or if you know someone well enough it could be used as a term of endearment
after i see someone at the club grinding on my girlfriend i say out loud "What a DLS (dirty little slut)" and the girl has no idea what a DLS is, or when i talk to my best friend online and say "Hi DLS" it's used as a friendly term because we both know what it means and we are not using it literally...
"Duuude look at her!!"

"I know right, such a DLS!!"
DLS by DIRTY!!!! December 27, 2011
That Emily girl is totally DLS!

DLS is the best state of mind.
DLS by SALAMANDER August 27, 2013