Bart: [gasps] "Wet cement"! Is there any sweeter sign? Well, maybe
"High voltage".
[skates towards it]
[a safe full of jewels falls in front of him; he hops it]
Frink: Hello, son. You want to try the flying motorcycle I just
invented?
Bart: No time.
Frink: OK -- [takes off]
-- Bart with a mission, "Lemon of Troy"