we’re in clover

Best definition
we’re in clover
A saying used to describe a thing being good or safe to use.
Phil our resident Structural Engineer was explaining about a finding the neutral axis of a top hat when he said in his thick Bristol accent….’If the ratio distance to global neutral axis (Cx) x total area (Ag) = sum of each individual distance to each neutral axis x each individual area…….then We’re in Clover”