2 Metaphors for oughter

I've found out one thing 'bout autymobble folks sense I've ben runnin' this hoe-tel, an' thet is thet a good many is ownin' machines thet oughter be payin' their bills instid o' buyin' gasoline.

Dat low-down nigger oughter be lynch', suh, don't you think, er e'se bu'nt?

2 Metaphors for  oughter