Did you Know???

[packman]

They used to use urine to tan animal skins, so families used to all pee in a pot & then once a day it was taken & sold to the tannery. If you had to do this to survive you were “piss poor.”
But worse than that were the really poor folk who couldn’t even afford to buy a pot; they “didn’t have a pot to piss in” & were the lowest of the low.

And where other sayings have their origins , such as---

“It’s raining cats and dogs.”
Carrying a bouquet when getting married.
“dirt poor.”
“chew the fat.”
The “upper crust.”
The custom of holding a wake.
Saved by the bell or a dead ringer.

http://extragoodshit.phlap.net/did-you-know/

[underpants]

1. Cool. Love these.

I know that cats and dogs has to do with thatched roofs

[soothsayer]

2. Probably not true for the phrases, but the tanning but is true

https://www.worldwidewords.org/qa/qa-pis1.htm

[The Velveteen Ocelot]

3. Interesting, but there's a bit of folk etymology going on there.

Mostly debunked here: https://www.mentalfloss.com/article/55688/6-widely-repeated-phrase-origins-debunked and here: https://www.mentalfloss.com/article/55503/7-tall-tales-about-life-1500s-and-origins-phrases

Bridal bouquets: https://www.modernwedding.com.au/wedding-traditions-why-brides-carry-a-bouquet/#:~:text=In%20Ancient%20Rome%2C%20brides%20carried,the%20smell%20of%20body%20odour.

Raining cats and dogs: A false theory stated that cats and dogs used to cuddle into thatch roofs during storms and then be washed out during heavy rains. However, a properly maintained thatch roof is naturally water-resistant and slanted to allow water to run off. In order to slip off the roof, the animals would have to be lying on the outside—an unlikely place for an animal to seek shelter during a storm. https://www.loc.gov/everyday-mysteries/item/what-is-the-origin-of-the-phrase-its-raining-cats-and-dogs/

And here are the many reasons why tomatoes were thought to be poisonous: https://www.smithsonianmag.com/arts-culture/why-the-tomato-was-feared-in-europe-for-more-than-200-years-863735/