>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> He is a jew
The answer is C. When Amy refers to dinner time with her family, she describes, not a pleasant but a distressing time during which her parents did things and behaved in embarassing ways. The fish cheeks that her father eats and offers her represents Amy's heritage but she would much prefer to just avoid the ritual of serving it and, perhaps not to see Robert's grimace.
As you said above, the word "bob" means fencing and you want to know how this can have a double meaning related to homophobes.
This is what I see the 2 meanings as:
1. fencing, as in taking out your fencing sword
2. take out your penis, as penis would be another word for sword in plays/books such as the one you're reading - this would be relating to gays if the convo was btwn 2 men