A Six Fingered Sister Kisser is someone from an area/town/village reputed to have high incidence of incestual activities. Like the village in Deliverance.

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.