A Doctor.
An extractor fan
When you're right the whole room shouts "Here, here!" But when you're wrong one person pats you on the back and says "There, there."
I charge five dollars if its a boy and five dollars if its a girl. Lets just say this ones on the house.
10 what Months Weeks!" Doctor: "Nine."
The hippocampus.
DR DOG: *thinking back on all the homework he ate* It wasn't easy