2) To do something quick and effective
The word is derived from London, where it is a common phrase.
2) Let's get these motherfuckers... No longtings
a) Takes a long time
b) Is tedious or stressful
c) Doesn't interest you
Originates from London.
Guy 1: Shall we walk to College?
Guy 2: Nah that's a long ting
Guy 1: I've got to do 17 pages of Coursework by tomorrow.
Guy 2: That's a long ting.
Girl 1: Shall we go to the Cinema? I want to see Snakes on a plane
Guy 1: Nah that's a long ting