The act of being obsessed with, or fangirling over Josh Olds AKA Fatty, the bass player for Family Force 5.

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.