This One Time at Space Camp... - S4-E18
Trivia: At the 1990 Space Camp, the Awesome Possums say the "way of thermal propulsion" is "Thrust first! Thrust hard! No mercy!" This is play on the 1984 film, "Karate Kid" where Cobra Kai students say the "way of the fist" is "Strike first! Strike hard! No mercy!"
Trivia: When Allison and Jack are talking about their relationship and marriage is mentioned, Allison says "is it so inconceivable?" This episode features Wallace Shawn (as Dr. Hughes). Shawn starred in "The Princess Bride" where his character was known for saying "inconceivable."