不要迷恋爷爷会让你中邪
[bù yào mí liàn yé yé huì ràng nĭ zhōng xié]
This nickname humorously means 'Don't fall in love with Grandpa or he will haunt you.' It reflects a humorous attitude and is often used jokingly, especially in cultural contexts where superstitions and jokes are common. There isn't necessarily a sinister connotation intended.