Grandma's Boy.
I'd never heard of it, but mtnbkr rented it, so he and I watched it.
His wife bailed after about 3 minutes, taking the daughter with her. She's at that age when she picks up words, and I think that 7 of the first 14 words were the F word...
I think both Chris and I found it to be absolutely HYSTERICAL.
Definitely one I'm going to buy!