Returned milk is (you know, in dem bottles). But milk you buy in the store is 1L, 2L, etc.

> Oddly just about everyone still uses feet and inches for their height.

True. Probably because of the recognition of the 6' centering measurement. People know that if you're 6', that's kind of the cut-off for what is referred to as 'tall enough'. Over that, you're generally 'tall'. Under that, and you're average height.