Oldest Son (almost 7) and Youngest Son (4-1/2) have lately taken the concept of privacy to heart. It coincided with being separated into their own rooms (temperament needs) and they love knocking on each other's doors and asking if they can come in.
But this one caught me off guard:
Oldest Son (running upstairs): I have to go potty!
Youngest Son (running after him): Me too!
OS: I get it first!
YS: I get it second!
OS: Okay (closes bathroom door)
YS knocks on bathroom door.
OS: Who is it?
YS (after a long pause): Who do you think it is?