"Hubba-wha?" is an expression of disbelief or surprise, frequently uttered by The Muppets in various productions.
- Fozzie Bear uses the phrase as he does a take for Johnny Carson on a 1976 appearance on The Tonight Show.
- In episode 109 of The Muppet Show, Kermit utters "Hubba-hubba-what?" when he learns Gonzo's doing a costume act.
- Ma Otter utters the phrase multiple times in the blooper reel to Emmet Otter's Jug-Band Christmas. Richard Hunt makes fun of this during the taping of a Two-Headed Monster sketch (found on 40 Years of Sunny Days) having the Two-Headed Monster shout "Hubba-wha! Frank Oz!"
- In the Monsterpiece Theater sketch "Much Ado About Nothing," both Grover and Mr. Johnson both say the phrase when they find a pig they were going to cook can talk.
- In the Monsterpiece Theater sketch "Monsters with Dirty Faces," one of the monsters says the phrase when Grover asks Rocky to wash his face. Then when Rocky agrees to do so, all of the monsters, and Grover, exclaim the phrase in surprise.
- In a Good Morning America sketch, Howard Straightalk brings onto a show a chicken named Debbie Lynn Sweetcheeks Hubbawha.
- Elmo reacts this way when he learns the odd things Alan claims to have cooked in Elmo's Magic Cookbook.
- In a season 37 sketch with Elmo and Jamie Foxx, the phrase is uttered twice when a fox and a duck reveal their names to be "Jamie Foxx."
- A group of Triangle Lovers exclaim the phrase when Baby Bear proposes some changes to the club in a season 38 episode of Sesame Street.
- Elmo and Colin Farrell both say the phrase upon learning from Murray that the Word of the Day is "investigate." (First: Episode 4219)
- In the intro sequence to the "Super Grover 2.0" segments, Grover says the phrase when he sees a spider dangling alongside a skyscraper with him.
- A. B. C-more utters the phrase when he realizes he's been driving in the wrong direction in the racing portion of Elmo's Alphabet Challenge.
- Grover, Elmo and Cookie Monster react this way when seeing some sentient socks pass by (caused by one of Abby's failed spells) in Count on Elmo.