The general public doesn't seem to be very fond of Nazis. A snail wouldn't be a very active pet. Cheese doesn't tend to make a good best friend. It's not a good idea to smoke dynamite. Cirrhosis of the liver probably isn't very pleasant.
People tend to dislike being hit with large, heavy things.
Cannons are not common household tools. Live weasels aren't often used as clothing. It's probably true that few, if any, Yakuza members are Jewish.