Quote from Niles in Can't Buy Me Love
Niles: She's riding the rails as we speak. Daphne: If I may ask, why does she take the train instead of flying? Niles: She's been afraid to fly since her harrowing incident. Daphne: Oh, dear. Did a plane almost crash? Niles: No, no, she was bumped from first class. She still wakes up screaming.