Clubbed thumbs (scientific name brachydactyly type D) is a recessive trait that reduces the length of the top bone of your thumb, resulting in
short, fat thumbs. It really sucks because you get made fun of and texting is harder, it's also harder to
play a lot of musical instruments and
don't even get me started on having to find a bowling
ball that doesn't get stuck on your thumb. You can have both or just one clubbed thumb, it also has like a million nicknames, including murderer's thumb, toe thumb, royal thumb, etc.