It two words from two different science fiction novels. 'droog' comes from A Clockwork Orange, where it's part of the youth dialect called
nadzat, it's Russian for "friend". 'lusor' (if I hadn't misspelled it so long ago) comes from The Glass Bead Game, it's Latin for 'player', in the novel it meant a programmer of esoteric demos using the GBG. The quotes are in my scifi profile:
scifi.stackexchange.com/users/3007/luser-droog?tab=profile