The term 'Yes ___, Bob!' can be completed with two different crossword solutions: 'Sirree' (6 letters) and 'Siree' (5 letters). 'Sirree' is an informal expression of agreement or affirmation, originating in the Southern United States. It is a variant of the phrase 'SURELY' and is often used as an emphatic response to a question. 'Siree' is another informal expression of agreement or affirmation, similar to 'Sirree'. It is also derived from the phrase 'SURELY' and is often used as an emphatic response to a question.