Popular in the world of the online social network known as Facebook, wallginity refers to a 'wall' found on a user profile that has yet to be commented on. The 'wall' is a section of the profile where other users can leave comments open for all to see. Upon receiving a post on their 'wall' a person has lost their wallginity.
the first post on many Facebook walls:
"HEY!!!! wow its been so long!!! how is everything with u?