Complex sentence: Sheila and Gerald Broflovski are getting ready to go to Mr. Mackey's meteor shower party.Kyle and his brother Ike are preparing to go to Jewbilee camp: a Boy Scout-esque camp for Jewish boys.
Split into simpler sentences: Sheila and Gerald Broflovski are getting ready to go to Mr. Mackey's meteor shower party. While preparing to leave, Kyle and his brother Ike are preparing to go to Jewbilee camp: a Boy Scout-esque camp for Jewish boys.