Macaulay Culkin the father of Jackson's youngest son

Macaulay Culkin is the father of Michael Jackson's youngest son.

The "Home Alone" star - who became friends with Michael in 1990, when he was just 10 years old - reportedly donated sperm to create Prince Michael II, known as Blanket.

The sperm was then inserted into an unknown surrogate mother, and Blanket was born in 2002, when Macaulay was 22 years old.

Even Culkin suspects he's Blanket's father. So many names have been mentioned as prospective dads, and this is probably the wackiest yet.

Michael is said to have idolized Macaulay, and thought using his sperm to create a child would be the 'next best thing' to being Macaulay's father. But Jackson and Culkin were best friends. He was one of the few people Jackson really trusted and Mack never let him down. Really, Jackson idolized him - that's why he asked Mack to donate sperm.

Friends claim Michael - who died in June - was not the biological father of his other children Prince Michael I, and Paris. Mark Lester and Dr Arnold Klein have both claimed they are the father of the children after donating sperm to Michael in the 1990s.

Macaulay remained mum on the paternity rumors.