After watching the movie Tango de la Muerte Lisa takes up tap dancing and sucks at it until Prof Frink gives her self tapping shoes. Meanwhile Bart and Milhouse instead of going to camp spend over night in the mall trashing it in the process. Wiggum thinks it's the work of a giant rat so unleashes a puma in the mall. And Rob is agast at Andy's Americanised pronunciation of "pooma" - awful awful stuff. [Synopsis at 13:00]