CoffeeOnIce wrote:Like the idea, but the plural of pi is pis. The apostrophe would imply that pi possesses something. That said, most restaurants make that mistake, so it wouldn't be entirely out of place.
Actually, I agonized on that for awhile before choosing "Pi's" (though I almost went for the symbol for Pi with the apostrophe, as an option). In the end, "Pis" looked too much like a bodily function, so I went with the apostrophe.