The coincidental slipping of roofies to both individuals at a two-person party, each planning to have their way with the other as soon as he/she looses consciousness.

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.