English native speakers, how common are these idioms with "water"? 1) take to sth like a duck to water: “He took to fatherhood like a duck to water” 2) (roll like) water off a duck’s back: “I can't tell my son what to do; it's water off a duck's back with him” 3) test the waters: “Candidates like to test the waters before running for office” 4) In hot water: “He found himself in hot water over his comments on childcare.” I've found them in a dictionary but I don't know if they're broadly used in spoken language. I've already heard many times the expression "water under the bridge". Specially in British contents.