as clear as a bell	perfectly clear (or sound)
as fresh as a daisy	be healthy and full of energy
as hard as nails	(of a person) very tough or callous
as heavy as lead	very heavy
as large as life	wee własnej osobie used to emphasize that a person is present
as stubborn as a mule	extremely stubborn
as steady as a rock	very steady and unmovable; very stable
as thick as thieves	(of two or more people) very close or friendly
as red as a beetroot	red-faced, typically through embarrassment
have a memory like a sieve	poor memory
shake like a leaf	tremble greatly, especially from fear
get on like a house on fire	have a very good and friendly relationship
go/come down on sb like a ton of bricks	with crushing weight, force, or authority
fit like a glove	fit perfectly
eat like a horse	eat a lot
as safe as houses	completely safe
spread like wildfire	extremely fast