The comments to the linked video may be worth scanning for humor. Some attempts by posters:
- What's a polar bear?
- A Cartesian bear after a coordinate transformation.
.....
In school you learned the 3 Rs. Now you are in biology 101, we will be studying the three Fs - feeding, fighting and reproduction.
.....
There's a construction worker who's feeling unfulfilled in his marriage, and he's begun to think about getting a mistress. He realizes this is kind of a big deal, so he decides to ask his friends about it.
First he asks a lawyer friend. The lawyer friend said "Do you have any idea the kind of legal trouble you'd be in if your wife tried to divorce you? The constant litigation, the legal fees, all the problems? Leave well enough alone, I say."
Then he asks an investor friend. The investor friend says "Well, there's always little perks to it in the short term, but I don't see it having the proper return on investment in the long term. Better to reinvest in what works."
Lastly, he asks a physics friend. The physics friend says "Oh yeah, getting a mistress is great. Highly recommend."
He says "Really?"
"Yeah," the physicist replies. "See, when you're not with your wife, she thinks you're with the mistress. When you're not with the mistress, she thinks you're with the wife. You can finally spend some proper time in the lab."