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8.
ddl
abbreviation for down down low, which is an extreme form of the rather common dl or down low, referring to the necessity of keeping a juicy tidbit of information hushed up.
"Whoa, you hooked up with HIM?!?!?!?!"
"Yeah, but let's keep it on the ddl. He's pretty skeevy. I was too drunk to know what I was doing."
"Oh, okay, I won't say a word."
by e-nizzle March 02, 2004
 
9.
ddl
Stands for Drop Dead Laughing. It's the new LOL.
Friend 1: I glass bottom boated that bitch last night
Friend 2: DDL!!!!1!1
by flexy mutha fucking lexy October 24, 2005
 
10.
DDL
Slang for Dirty Damn Liar
Barb: "Hello, I just got back from China!"
Dave: "Oh can it, you DDL!:
by NotOBF January 28, 2006