Holy cow, I wrote a book!
Brazil nuts are perhaps best known for
floating to the top of a jar of mixed nuts.
According to Wikipedia,¹
the reason for the phenomenon is not well understood.
At least in my house, the reason for the phenomenon is quite clear:
Brazil nuts float to the top because nobody in my house likes Brazil nuts.
When you reach in and grab a handful of nuts, you toss the Brazil nuts
back into the jar, which is why they end up on top.
A few months ago, I asked "Does anybody actually like Brazil nuts?"
A lot of people agreed with my opinion of them,
but there was a notable dissenter:
There is now a symbiotic relationship between my family
and Larry Osterman.
Every so often, I will skim off the Brazil nuts
and bring them to Larry.
Both sides win: We get rid of the annoying Brazil nuts,
and Larry gets a small bag of Brazil nuts.
¹ Translation: I could just as well be making this up.