Lisa, I can't imagine anyone being more likable than you. But, apparently, this new girl is. So my advice would be to start copying her in every way.
"Lard of the Dance" is the first episode of Season 10(originally produced for season nine).
On the first day back to school from summer break, Lisa meets a girl her age who acts twice her age and wants Lisa and her friends to do the same. Meanwhile, Homer recruits Bart to help him make money off recycling grease..