The line comes from Dinosaurs, the early 1990s family sitcom featuring animatronic dinosaurs, in its recurring Ask Mr Lizard segment. The segment parodied children's science shows, with Mr Lizard cheerfully presenting an experiment and his young assistant Timmy suffering the predictable consequences. His repeated call for a replacement became the segment's running catchphrase and its most remembered joke. Clips and quotes later circulated widely online, where the phrase settled into meme use for any mishap treated as disposable and easily replaced.
关于此声音
Mr Lizard says we're going to need another Timmy in this Dinosaurs sound effect, used as a reaction when an experiment or plan goes badly wrong.
This short clip captures Mr Lizard delivering his deadpan catchphrase after yet another staged science experiment has gone disastrously wrong for his assistant Timmy. His calm, cheerful announcement that a replacement is needed contrasts sharply with the chaos that came just before it, and that mismatch is what makes the line so funny. The delivery is brisk, flat and completely unbothered, as if losing Timmy were a routine inconvenience. Played on its own, it instantly signals failure, damage and a hilariously casual response to both.