I dreamed that, like a colon, I stood between parts of a numerical expression of time (in hours, minutes, and seconds).  On digital clocks, I got to blink.

Later that night, I dreamed about that gorgeous passage in the novel MIDDLESEX by Jeffrey Eugenides, about the teacher who "spoke in complete paragraphs.  If you listened closely it was possible to hear the dashes and commas in his speech, even the colons and semicolons."