The only mysteries i'm into tend to be Horror. Not Sherlock.
The next person will speak english for the benefit of us laymen and probably has skeletons in his/her closet. (Both literal and metaphorical) 
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"They do, but what do you think is on the radio? Meat sounds. You know how when you slap or flap meat, it makes a noise? They talk by flapping their meat at each other. They can even sing by squirting air through their meat." - Terry Bisson