The expression ‘No flies on you’ means you’re a busy person and/or quick to pick up on things. It dates back to the 19th-century and was intended as a contrast to horses and cattle, such as the fellow in this photo, which tend to be fly magnets when at rest.
Graham's Island 
I do not like flies at all!
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I don’t like the biting kind, that’s for sure.
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🙂 haha… that was a fun bit of trivia. Although I feel I may be a fly person. 🙂
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I quite like flies too, so long as they’re not too bothersome and not biting!
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Yikes!
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Yikes, indeed. Scenes like this make me hope I don’t come back as a cow!
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I’m not patient enough to come back as a cow!
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Perhaps that’s why you would come back as a cow, to learn patience!
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Oh no! If it has to be a cow, then I wish it’s at least a Hawaiian cow (for the scenery, not the flies!)
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These cattle do have a good view, though the pastures can get very dry!
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