The mom and dad -sex move- it's when you bang really hard, missionary with the lights off and then right before the guy's about to cum, you stop, flip on the lights and argue really loudly about money.

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.