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A new school year has begun at Springfield Elementary School, and Lisa Simpson (voice of Yeardley Smith) is asked to show a new girl in her class around the grounds. While Alex Whitney (voice of Lisa Kudrow) is the same age as Lisa, she has the style and personality of a teenager, and laughs at Lisa's interests in ponies, dolls and kid's games. Alex prefers shopping and trying on perfume and jewelry, and soon Lisa's friends are following Alex's lead, to Lisa's chagrin. Matters come to a head when Lisa and Alex both end up on their class's social committee, and Alex persuades Principal Skinner (voice of Harry Shearer) to change their annual "Apple Pick" into a formal dance. Adding insult to injury, Lisa finds she can't get a date for the big party, not even from not-so-secret admirer Milhouse (voice of Pamela Hayden). Meanwhile, Homer (voice of Dan Castellaneta) has discovered there's money to be made in recycling cooking grease, and he sets up a new business to cash in, only to discover his household doesn't generate enough fat to turn a profit. However, Homer learns that the Springfield Elementary cafeteria is loaded with grease, and he and Bart (voice of Nancy Cartwright) formulate a cunning plan to steal it. "Lard Of The Dance" was first aired on August 23, 1998.