All credit for this word/phrase goes to Nate Myers (natejont).
Jack: We were at least 100 miles off course when we crash landed on the island. We need to find the transceiver at the crash sight and relay a message before the battery dies, or else no one will find us.
Shady characters that look like they have a propensity towards criminal activity.
The whole time I was on the look out for JDLRs, and there were plenty. All kinds of shady characters, but none working in pairs, none that fit the description of the fellows little Elsa described.
An ugly girl comes up to you at a bar and says, "Want to buy me a drink?" You say to your friend sitting next to you, "JDLR man, it just doesn't look right"