Here's some insight on the Charles-cum-tampon story, if you believe it. (Excerpt) http://www.familyfirst.com/the_internet_website_of_hrh_th.html
Tosanne Bar or Rosie O Donnel? What is the sum hypotenuse of the combined wights of the Chrysler Building, Statue Of Liberty, and Godzilla?
French wine, Italian salami, certain hard to acquire LPs with different pictures on the cover made for the British market.
That one's easy. It's because 2 bewbs or butt cheeks go in 'em. That's why you never hear of a "pair of thong".
I think you missed something somewhere. We don't call anything that 2 bewbs go into a "pair" of anything. That's the point.
Yeah true, but in that case, it's clearly a "pair" of something, since they are two completely separate pasties and are not physically connected to each other in any way. Bras and panties, on the other other hand, are similar in that they are both "monolithic" structures, yet one is called a "pair" and one is not.
I can't say about panties for sure, other than that the word is a diminutive of pants. But speaking for pants, they were originally a non-singular item. The first pants were more like chaps, and worn by horse riding cultures from the Asian steppe. They were indeed a pair of two (each separately covering a leg).
One of the interesting things about world civilizations is that they've interacted in various ways, often resulting in consequences other than the famed "clash" of Samuel Huntington fame.