A private tooter
Then, fart.
Two-forty (use an Irish accent)... It's two-farty
Pupil: Cannot miss Teacher: and what is don't short for Pupil: Doughnut !
One says, "Spit out your gum!" The other goes, "Choo Choo Choo"
Just two. One to explain to the public that everything possible is being done to solve the problem, and the other to screw the lightbulb into the water faucet.
A private tutor.