(idiomatic, simile) dumber than a rock, thick as a brick

(idiomatic, simile) red as a beetroot, flushed, red-faced

(idiomatic, simile) wise as an owl

(intransitive, idiomatic, simile) to be fast asleep, to sleep like a log

(colloquial, idiomatic, simile) mind like a steel trap, smarts (great knowledge or intelligence)

(intransitive, idiomatic, simile) to swear like a trooper

(idiomatic, simile) as pure as the driven snow

(figuratively, idiomatic, simile) crystal clear

(intransitive, derogatory, idiomatic, simile) to lie through one's teeth

(idiomatic, simile) blind as a bat