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I cannot find the term "bob in a bob" in any online slang dictionary. Perhaps you heard it wrong. A "bob" was an old term for a shilling (coin), and can be a modern slang abbreviation for "bend over buddy" or "battery operated boyfriend."
It would depend on the sentence. Use "He and Bob" any place you would use "he" and "Him and Bob" any place you would use Him... Examples: "He and Bob went to the store." "I gave it to Him and Bob." Although it is more common to say the name before the pronoun, as in "Bob and him".
You have it spelled correctly for bob as in bobbing for apples or having your hair cut in a bob, etc. Bob.
Bob and street are the nouns in this sentence. Bob is a proper noun, a name.
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believe it or not, bob smith of wordsmith had invented applesauce. believe it or not, bob smith of wordsmith had invented applesauce.
Bob Smith was born on March 30, 1941.
Bob Smith was born on March 30, 1941.
Bob Rowland Smith was born in 1925.
Bob Smith - doctor - was born in 1879.
Bob Smith - doctor - died in 1950.
Buffalo Bob Smith was born on November 27, 1917.
Buffalo Bob Smith was born on November 27, 1917.
Bob T. Smith was born on 1877-11-23.
Bob Bob
Certainly. They are all named Bob Smith. When you become an engineer, you are obliged by law to change your name to Bob Smith. This is so that it will always be easy to find an engineer when you need one; just open the phone directory to "Smith, Bob". Do note that there is some controversy before standards boards with respect to "Bob" versus "Robert" and so on.