I turned up at a party tonight after going being at another party. When I arrived there were lots of cars and no body arriving which I thought was odd seeing as the party had only started an hour before I arrived. I thought everyone was oddly punctual.

When I walked in I found out the party had been going for two and a half hours. Oops. I got the start time a little wrong. When I apologised to the Chris, whose party it was, he said it was ok because he knew I was going to be late. Apparently I'd warned him. So as it turned out, even though I thought I was on time I'd pre-warned Chris about the lateness that I was doing even though I didn't know I was doing it.

Does that make sense?