M.C. Safety and the Caution Crew

Appeared in the episode Bart vs. Lisa vs. the Third Grade.

Yo Yo Yo Yo,
I'm feelin' cautious,
I say a crosswalk a crossity walk and you don't stop crossing till you're on the next block,
First you look both ways and you walk not run,
Obeying safety rules is acceptable fun.
Break it down now!

Walk don't run,
Drink juice.
Yum Yum