This movie had lots of bad things in it, but the videotape in the mailbox especially. It makes no sense whatsoever: She gives the porn tape starring her mother to the woman who is the other wife of her grandfather. Explain to me how that makes ANY sense at all. Ugh, bad writing...
She screwed up. That's what makes it funny. They drove all the way across country for the express purpose odf telling her grandpa's other widow his story, then 1.) she tells the entire gut-wrenching story to the WRONG person, then 2.) drops off what she THINKS is her grandpa's videotaped will they had all watched because she can't bear telling the whole story over again. At some point she'll get all the way back home and find out that 1.) She failed to inform the woman and 2.) she'll owe the visdeo rental place for the porn tape!