Sad retort,
used primarily when someone has lost an argument.
Used as a
lame or '
hip and rad' replacement for the Nazi law in discussion groups, where it's use infers automatically losing the argument.
Poster-1: I think Ben and Jerry's is the best
ice-
cream
Poster-2: No, Wallmart is better
Poster-1: I think you're mistaken
Poster-2: kys
Poster-1: Thank you for admitting defeat in that, learned response.