As rgarrett88 points out, short distances are often reduced to foot and inch numbers, with the receiver left to intuit context. Sometimes people will assert they hit a hundred, or went from zero to a hundred in x seconds, and weight-lifters are likely to talk about the number they can push ... again reliant upon sender and receiver sharing the same cultural background.

My comment about 'us' being so considerate was somewhat tongue in cheek, natch, though (since I'm speaking for all the rest of us now) we'd really like it if you guys would switch over to metric at your earliest convenience. I won't say ISO / SI, as working in K is just too unwieldy :)