but we can't all be lake ducks

bɐtwi:kɐ:nto:lbi:læikdɐks a metamorphic phrase that can be adapted to mean whatever you need it to mean, versatile, like the pathological liar of the idiom world.

Angela: We know that the ants are responsible for the decline of the Roman Empire.
Natalie: I know, but we can't all be lake ducks.