I remember reading, probably in Dragon magazine, an article on how to cheat at (A)D&D games. (I was probably about fifteen then.)
One of the suggestions was to distract the DM and then to sneak a look at their notes—and one suggestion for distracting them was
Expose some of your cleavage, if you have cleavage to expose.
I remember not knowing the word cleavage and having to look it up in the dictionary at home before becoming enlightened.