I've heard about cotton picking and the pickers used to get hardened skin on their hands. "Now just a cotton picking minute".
Having while retail,regularly bought and sold peanuts for bird feeding in pallet tonne lots, the reason they are 'unfit for human consumption is due to a)treatment with fungicides b)contamination by rats, the sacks often have 'burrowed in' holes and rat faeces. C) they often also had 'butt end' remains of rolled smoking material thought not to be tobacco. No way would I eat these, nor suggest you do. The supplies come in from Argentina,Malaysia, China, and various Central american states.
The ones I buy for eating in Morrisons come from China, they are not top grade in my opinion but they are not as popular as they used to be.
You have some home delivery supermarket! Wrong whisky, wrong peanuts suppose you got the nuts for free too, let us know which supermarket you use as like the sound of all these freebies
I had paid for the nuts, one bag roasted and one raw, I didn't notice until I tried eating them, the birds got the raw ones.
In our old London garden which was sheltered and extremely fertile, one of the most prolific weeds was the peanut. An elderly neighbour fed them to the squirrels, who promptly buried them in our garden. The plants never survived the winter.
I believe they like hot fairly humid conditions and mostly for longer than we are likely to get in the UK. They are probably an annual plant as well, growing the following year by nuts already buried by the parent plant, the year before, in a natural setting.