Knock one over with a feather and knock one down with a feather

Knock one over with a feather and knock one down with a feather are two versions of an idiom. An idiom is a commonly used word, group of words, or phrase that has a figurative meaning that is not easily deduced from its literal definition. Often using descriptive imagery or metaphors, common idioms are words […]
from Grammarist
https://grammarist.com/idiom/knock-one-over-with-a-feather-and-knock-one-down-with-a-feather/