A more polite way to call someone a jackass.

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.

Jack > Ksharp 24-0

basically a jack ass

Used by people to curse without actually cursing by using donkey as a synonym for ass.