At the Springfield Park, Milhouse is showing his RC plane flight
skills to Bart and Nelson, as they watch the plane come and go, and
come, and go...
Bart: Milhouse, this is boring. Make it crash or something.
Milhouse: [smugly] Perfectly level flying is the supreme challenge of
the scale model pilot.
Nelson takes the remote and gives a more spectacular stunt. The plane
loops and wanders everywhere, until it targets a paddleboat occupied
by Martin and Ralph.
Martin: Ah! It's gaining on us!
Ralph: I'm pedaling backwards!
Monty Burns also has a close encounter with the plane...
I don't like being outdoors, Smithers. For one thing, there are too
many fat children.
The plane bounces off Smithers' head, and finally ends its trip
crashing on the roof of a mysterious old house. The fence says "no
trespassing".