born with a caul on (one's) head(redirected from born with a caul on their heads)
born with a caul on (one's) head
Lucky. The "caul," part of the fetal membrane that is sometimes present on the head of a newborn baby, was previously viewed as a magical symbol of protection. I can't believe you walked away from that car accident without a scratch! You must have been born with a caul on your head!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.