That would be true if it was just on those two gin bottles but the name also showed up on that vat of acid. If it is a parody of something it's more likely to be a parody of Kirkland Signature, which is the in house brand for Costco. They make everything from food to pet products to baby products to healthcare products to beauty products to clothing to electronics (I consider batteries to be electronics) to household products to even alcohol. I'd say Old Toad is the low cost brand name for some store's in house products and it would not surprise me that they manufacture industrial acid as well.
Wow, that's pretty plausible explanation ! Good job. I wonder who the CEO would be? A literal "old toad ". A prince/king/exec that got turned into a toad?idk.....
Don't know who the actual CEO could be but I can imagine their print ads would feature a toad in a Southern Colonel's outfit with a cane holding a highball glass full of gin. xp