she's as cool as a cucumber
Before repetition lent the cliché some meaning, I thought the advert for Dempsey and Makepeace, which contained the line "she's as cool as a cucumber" was surrealist nonsense. Thinking I'd learned a new funny phrase, I took it into my active vocabulary without question. So when I nodded intelligently in primary school and noted that Miss Kaveska was as cool as a cucumber, thinking it was a joke, I must have sounded a right little turd. Ah well.
written by Jo* Bl*th, approved by Log