When I was teaching college Spanish, it wasn't surprising to have a number of students vanish by the third week. Sometimes they dropped; sometimes they just stopped coming and forgot to drop.
Therefore, I didn't think anything of it when this particular young woman disappeared from my class in the second week. I was surprised, however, when half an hour into class during the eighth week, she walked into class and rather noisily headed toward an empty seat, saying, "Sorry. My bus was late."
I thought, but somehow managed not to say, "Your bus was six weeks late?"