Completely pedantic bugbear: people who say 24/7/365
It should either be 24/365, or 24/7/52
I'm just reading a document where they've said 24/7/240 - and of course what they mean is five days a week for 48 weeks.
Which should, of course, be 24/240 or 24/5/48
Utterly inconsequential, I know.
I'm now off to deal with this colleague that keeps pronouncing it "marshmellow"