In the Seinfeld episode where George is boyfriend to Megan Mullaly, and a relative of hers dies, they need to fly to another city for the funeral. George and Kramer scheme to have George go (because he wouldn't otherwise) because their understanding is the flight will be reimbursed due to death in the family. Kramer's boon is that he gets frequent flier miles.
The airline clerk lets George know he will be required to submit a copy of the death certificate when asks for reimbursement. When George asks a family member for a copy of the death certificate at the wake, he sheepishly gives the reason (paraphrased) '...wanted to make an admittedly rudimentary scrapbook of his life...' This clearly upsets the family member.
The question is, why doesn't George simply say he would be using it to get his flight for free? Is this really such a faux pas? After all, he is the boyfriend to the woman who is so closely related to the bereaved.