If they say, "I'm on my way" they haven't even left yet.
If you had to ask, they are probably already late, but prepare yourself to hear,
"There was a long line." or?
"The traffic is outrageous."
And without fail, if my husband forgets to pick up the milk, or the eggs, he'll never admit that he forgot.
He'll say, "they were out of 'em."
OR even try to convince me that I didn't mention it at all.
I fixed that, though. I started turning off supper in mid-prep, and would find a ride to the store myself (I still don't drive) and then I came home with about five hundred bags of goodies, and of course, I smiled sweetly and said,
"But it was all on sale." (Not a lie. It WAS all for sale. I never said it was discounted.)