In no particular order:
https://en.wikipedia.org/wiki/Category:Metaphors_referring_to_spaghetti
https://en.wikipedia.org/wiki/Busy_beaver
https://en.wikipedia.org/wiki/Garden-path_sentence
https://en.wikipedia.org/wiki/Micromort
https://en.wikipedia.org/wiki/Kentucky_meat_shower
https://en.wikipedia.org/wiki/Phreaking