DSE
(1) Dumbest Shit Ever
Just use it for anything you consider extremely dumb, such as this definition.
(2) Hkdse
The university entrance exam in Hong Kong, notorious for being hard (not as hard as SAT and Gaokao though) and causing suicides
(1) That is DSE. (Points at something he doesn't like)
(2) DSE candidate: "The whole examination is a lively hunger games"