If you think your mother-in-law is a nightmare, spare a thought for the woman who was forced to do a DNA test on her child.
And when she got the DNA results - the deluded screaming grandma still refused to believe the paternity test.
In TLC show I Love A Mama's boy, Nancy nastily makes it her mission to split up her son Robert and his wife Kristy, despite the fact they have two kids together.
