Sexy Megan Fox

Megan Fox‘s thumbs have become almost as famous as TransformersTeenage Mutant Ninja Turtles or any other work from the rest of the actress’ filmography. The internet is slightly obsessed with them, in fact. The truth is that Fox doesn’t discuss them much, but she did mention them on The Tonight Show a few years ago in a joke to then-host Jay Leno.

Megan Fox’s thumbs are genetic

Fox has a condition called brachydactyly. Brachydactyly is an inherited trait that causes the shortening of bones. In Fox’s case, her “club thumbs,” as they are sometimes called, are medically referred to as brachydactyly type D, meaning the trait specifically affects her thumbs. It gives the star’s thumbs a stubbier, flatter look than her other fingers or most people’s thumbs. Other common names for the condition are carpenter’s thumbs, stub thumbs or toe thumbs, though all of those are pretty insulting.