During the Great Depression, the Tennessee Valley Authority outlawed pet rabbits, forcing many to hot glue-gun long ears onto their pet mice.

Cave Johnson: As founder and CEO of Aperture Science, I thank you for your participation and hope we can count on you for another round of tests. We're not going to release this stuff into the wild until it's good and damn ready, so as long as you keep yourself in top physical form, there will always be a limo waiting for you. Say goodbye, Caroline.
Caroline: Goodbye, Caroline!
Cave Johnson: She is a gem.

I've got some advice about getting covered in the propulsion gel.... do not get covered in the propulsion gel.

Oh. Hi. So. How are you holding up? BECAUSE I'M A POTATO.

claps slowly three times

Oh, good. My slow-clap processor made it into this thing. So we have that. Since it doesn't look like we're going anywhere - Well, we are going somewhere. Alarmingly fast, actually. - but since we're not busy other than that, here's a couple of facts: he's not just a regular moron. He's the product of the greatest minds of a generation working together with the express purpose of building the dumbest moron who ever lived. And you just put him in charge of the entire facility.

clap, clap

Good, that's still working. Hey, just in case this pit isn't actually bottomless, do you think maybe you could unstrap one of those long-fall boots of yours and shove me into it? Just remember to land on one foot...

Before the Wright Brothers invented the airplane, anyone wanting to fly anywhere was required to eat 200 pounds of helium.