1) Hacker group 
[hacker group] Derptrolling (sometimes referred to as Derp) is the name of a hacker group that has been active since 2011. They have largely used Twitter to coordinate distributed denial of service attacks on various high traffic websites. In December of 2013 they managed to bring down large gaming sites such as League of Legends in an atte...
1. A derelict place, non-infrastructural. 2. Somewhere a bit dull/stripped out.