Horses and bulls make a bit of sense, big animals make big poos. Calling something a big poo means it is very stinky, a huge waste, etc. Very yucky. But bat poos? Those are teeny tiny, small bats make small poos. What do people have against the poos of bats?
Also, what about larger animals? Whale poos are huge, and yaks, buffalos, etc. all make big poos. Don’t ask me how I know.
Horses, because they used to be everywhere. Step in the street, and you were likely to step in some.
Bull, because it’s very big and smelly and there was usually some around (steer manure is still prized for gardening).
Bats… because it rains from above and is really gross, and you’ve got a high likelihood of getting really sick from it.
Why we don’t go on about pigeon and seagull guano though? I have no idea.
Man that’s some straight gullshit.
That doesn’t sound half as pigeon-shitty as I expected.
Horses and bulls make more sense, English is a quite an old language. The diseases from bat poo sound nasty.
Mammallist birdshit.