Today, my roommate came out of the bathroom, and asked me how the scales knew her weight in both pounds and kilos, even though "the exchange rate is always changing." I actually live with this idiot. FML
For anyone who is interested, she has taken it with good humour and is still laughing about it. It's one of those electronic scales, so I did briefly get her to believe that due to the GFC, the scales would say she was putting on more pounds than kilos before I came clean with the truth.