The two teens that snuck onto the Girl Undercover set say the third called himself Speed, "as if that is not made up!" - This is a reference to long-time SVU writer, Speed Weed.
Jessie Dawning (Maggie Grace) says "Kids shoot up a high school. Blame Marilyn Manson". This is in reference to the Columbine High School massacre, which occurred on April 20, 1999. Teenagers, Eric Harris and Dylan Klebold, shot and killed 13 people at their high school, wounded 21 others, and killed themselves afterwards. Following the massacre, one common view was that the violent actions of the two shooters, were due to violent influences in entertainment, specifically those in the music of Marilyn Manson. Speculation in national media, and among the public, led many to believe that Manson's music and imagery were the shooter's sole motivation. This was later debunked as completely untrue.
LUDs is a telecommunications term, meaning "Local Usage Details". It is a list of locally called numbers, often provided by telecom companies to the police as part of an investigation.