Lais means you got something which may not have been obtain legally, morally, or ethically. These days we use lais for just about any losers. A real gangsta and not some loser thug must get their dollars, their papers, or whatever... When I think about it, my grandfather generation and before them were slanging back in the old days with opium...them peeps are real LAIS LAUS. All the other peeps are txiv deeg only.