From the "No Duh" department

This is actually printed on a two-pack of basic Colgate toothbrushes. I figure that they had to put it on there because they got too many phone calls from confused customers who didn't know how to count to the difficult number of two. (Here's a hint, count your nostrils. You know, the things that your fingers are knuckle-deep in.)

(I do realize that the glare from the overhead light obscures the wider picture, but I did take a second closeup photo)