It's another one for Emily, and it's called "The Wonder of Reproduction," and as the mother of a mad scientist, I can wholeheartedly tell you it's no wonder that I never did that again.
“The Wonder of Reproduction”
In this episode: Crow T. Robot (5), Tom Servo (5), Bob (5), Emily (4), Pearl Forrester (1)
[as the title is revealed]
CCrow
Finally! We get to learn how to forge money.
[Title card reads "From the Wonder World Series".]
Anyway, here's, uh, Wonderworld. Today was gonna be the day that we're gonna reproduce with you...
GGary
Man, oh man, would you look at this one? She sure is beautiful...
CACrow [as Gary]
But she doesn't even know I exist!
BBob
Well, this she happens to be a he.
EAEmily [as Bob]
Idiot.
BBob
You're looking at the male betta splenden, and he is one of the most beautiful fish you'll probably ever see. As you look closely...
SAServo [as Bob]
Just look at that muddy brown.
BBob
... almost every color of the rainbow, sparkling in his sleek body, and flowing fins as he swims...
CCrow
Bob's biting his knuckle right now.
BBob
Strange as it may seem, in the family of betta splendens, it's the father who cares for the babies, and raises a family.
A real Mr. Mom.
GGirl
Father? What does the mother fish do?
CACrow [as Bob]
She drinks.
BBob
The father betta will go up to the surface and breathe in a mouthful of air. Then he will swim to the place that he's chosen to build his nest. Now this is usually by a plant, or on the underside of a floating leaf.
EAEmily [as Bob]
Hopefully by a sport's bar.
BBob
Then he will blow out the bubbles of air, which is coated with very special saliva from his mouth.
When he does it, he's a good dad, but when I do it, I'm asked to leave the Arby's.
SAServo [as a fish]
As I sat in the hole, I couldn't help but wonder. Was this all there was to life under the sea?
BBob
Now, the Creator has given most wild creatures a strong instinct to protect their young, and mother mouthbrooder performs this task in such a remarkable way.
CCrow
Magic!
BBob
Even though she has scooped up all of the eggs into her very large mouth, she will not swallow them. She keeps them in her mouth until they hatch into baby fish.
EAEmily [as Bob]
And will remind those children of her sacrifice for years to come.
[as the three children leave to go catch minnows]
BBob
Have fun!
CCrow
'Cause the Vietnam War is right around the corner!
Uncle Bob will return in The Wonders of Snake Digestion!
These quotes come from Wikiquote's Mystery Science Theater 3000 pages and are available under the Creative Commons Attribution-ShareAlike License.