This is part 3 in the Nursing Home Cuckolding Series .. In part 2, Your GF revealled to you that as well as the many OAP's she has been servicing and draining, your grandpa was among the lucky ones getting to fuck her without a condom on the regular.. and that she could be pregnant with his seed! 

In this video, your GF comes home from her pregnancy shower, holding a bunch of cum filled condoms. She explains it was part of one of the games, "Guess the daddy". She shows off the condoms, first yours, watery and without any swimmers inside, and goes on to show the residents condoms, reminiscing about their big balls ,cocks and stamina as she shows each sperm filled condom. Finally she shows off the big one - your Grandpa's, thick, creamy and in abundance. THIS definitely was the ejaculate that got her pregnant, you are basically infertile! You'd never knock her up! As she humiliates you, about how inferior you are to old men like your grandpa, she begins to get contractions! Oh no - Labour - Now you'll get to watch her give birth to your uncle!! 

There is also an alternative ending scene at the end...

(CUSTOM VIDEO)