Check your checklist

Today I had a conversation with dingbat that went like this:

Me: I don't see Thursday's meeting on the calendar.
Dingbat: Big eyed blank stare... long pause
Me: Oh its not in for the entire year
Dingbat: Big eyed blank stare, rifling though files (for several minutes)
Me: Did you get the schedule?
Dingbat: I don't know
Me: Check your checklist
Dingbat: Oh, I have it highlighted, that must mean I didn't get it
Me: Ok... I will follow up with the creator, maybe you should check your checklist for others you may have missed.