Like premature ejaculation but you hope for it... When your primal instincts take over and you have a boner but really you want out of the situation so you just cum and run.

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.