Definitions by Fetusfriends101
Fetus friend
A friend that you’ve known since the infancy or a childhood friend that you’ve known your entire life, essentially since the time you we’re both fetuses, because your mom and their mom and/or parents have been friends since before your birth and you became friends with your parent’s friend’s child by default.
Fetus friend by Fetusfriends101 June 13, 2019