The scenario: Bronwen is doing her business on the potty. For a long time. A very, long time.
Conversation is as follows:
Jen: Bronwen are you finished?
B: Not yet.
Jen: You HAVE to be finished. You've been in here a LONG time!
B: Okay, I am ready.
Jen: You've been in here so long, you're now seven! You've missed 2 birthdays while you were sitting here.
B: Actually, that would be 3 birthdays.