A friend of mine and I were at a restaurant once, and he was struggling with his cutlery. As I remember, he was trying to cut a steak with a dull knife. The next time the server came to our table, he said "can I have another knife? This one’s so dull you couldn’t cut a fart with it." Needless to say, I had a mouthful of water when he said it, and I ended up irrigating my sinuses with it.
In music, a sharp (that number sign thing above) raises the pitch of a note by a half step. On a piano, the note is the key to the immediate right of the natural note, which is normally a black key. So F♯ is the black key between F and G. A flat lowers the pitch by a half step, and is the (usually) black key immediately to the left of the natural note. So G♭ is also the black key between F and G. F♯ and G♭ are enharmonic, which means they make the same sound but have two different names.
There’s no black key between B and C, or E and F, incidentally, so B♯ is C and C♭ is B, E♯ is F and F♭ is E. Kind of. They explain why in music theory courses.
I had a question last week about what B Dorian mode is. The Dorian scale is the major scale, but starting and ending with the second note of the scale. B Dorian is the A major scale (A B C♯ D E F♯ G♯ A) starting and ending with the B (B C♯ D E F♯ G♯ A B). Again, they talk about this a lot in music theory classes, though there is a pretty good article on Wikipedia.
Sharp Corporation is based in Japan and they make all kinds of electronic doodads. They were one of the first manufacturers of pocket calculators. I worked with a guy back in college who had one, and one day I asked if I could borrow it. He gave it to me and said "that there’s a Sharp calculator!" Sharp, of course, is a synonym for attractive, like in the ZZ Top song…
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