The Cartoon Quote Game...

"Father."
"Nope, don't say it. No birds. You can settle for butterflies or nothing. Butterflies!"

Unfortunately, these are quotes I don't recognize.

On context alone, I'd pin these lines on Junior and his father, Sylvester. Sylvester has failed miserably to obtain a bird for his son, and Junior hides his face yet again in shame. Sylvester wants no more of that pain and defeat, so he forswears birds and focuses on less-hazardous butterflies. Clearly, it's one of the Friz Freleng cartoons, but I can't pinpoint which one without Google-cheating.

Correct. This is Junior and Sylvester from the Robert Mckimson directed short "Cat's Paw" from 1959. Mckimson was the one who did the Sylvester and Jr shorts, although Freleng did direct one short with Jr. called "Goldimouse and the Three Cats."
You are almost spot on on the quoting too. Sylvester has indeed failed to catch a bird for Jr. and instead goes after a butterfly--who then promptly beats the crap out of him. No wonder Jr. walks off with a bag on his head at the end of this short.

Dang, I may have to change my username to CloseEnufBunny. Well, thanks for the encouragement, Glowworm. Perhaps a quote that's gets quoted in-universe will help:

"Put that thing back where it came from, or so help me ..."

Found it rather quickly. It's Mike Wazowski, from "Monsters, Inc."

Yes, this is the one-eyed Mike Wazowski from Pixar's Monster's Inc. He's antagonizing Jimmy Sullivan about keeping the "contaminated" child Boo as a pet. The line gets morphed into a company play about this same scenario. Nicely done, Em.

Thanks, OUB. Now for another untapped quote:

"Have you been playing all summer? You think this is a game? Well, guess what? You just lost!"

Found it. It's Hopper from "A Bug's Life."

Yes, Salty, Hopper did say that. Good job. . You're up, and welcome back.

Thank you!

"Why would they change math? Math is math!"

Hint: That line is in the movie's trailer. The move that came out not long ago.

Oh! I think I remember this one, though I haven't seen the film yet. Could this be Mister Incredible / Bob Parr, flummoxed that elementary mathematics has undergone a rebuild after trying to help Dash with his homework? I think he says this to Frozone / Lucius Best, who's visiting his longtime friend. From Pixar's The Incredibles 2.

Yes, that's it! But Bob was speaking to his son, Dash.

You're up.

Sweet. Do I have any other decent quotes in my rusty old head? Maybe.

"It's not just a job, it's an adventure!"
"I hate adventure!"
"Perfect! You're hired."

Incredibly, I found it. It's Mickey Mouse and Dr. Frankenollie, from "Runaway Brain."

Precisely! You found it, Em, and without switching brains, too. Bravo, you're up.

Thanks, OUB. Now for a good one:

"A crab my age should be retired. Getting a tan! Playing sea golf. Sipping a Tuna Colada. Not babysitting another teenager."

Hint: He sings about life under the sea.

Ah, at first I was thinking about Mr. Krabs.
It's actually Sebastian from The Little Mermaid.