Watch Sesame Street Season 20 Episode 18 Online
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- COUNTRIES: United States of America,France,Germany,Netherlands,Spain
- Subtitles: English
An early Elmo meets Bob's deaf friend and learns to say "hello" in sign language. A classic skit of Phil Harmonic and Placido Flamingo live from the Nestropolitan Opera. A vintage animation of Gerald's dog, Sparky, re-imagined as an alligator. The Honkers play "Mary Had a Little Lamb" on their noses.