How long is your drink?

While there is an expression about having a long drink, length is not usually a measure of drinks. So I was surprised to see an ad for 300m of a soft drink in some recent junk mail!

As always, the message is that proof reading is really important – best done by someone else or at a later time as proofing as you write has limitations.

Of course, the person preparing the ad may have written 300ml and something happened at the design or printing stages, but that is why printing proofs also need to be checked carefully.