Because I’m bored

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.

Used as an alternative lyrics when you forgot the lyrics from the original song

Similar to oh fuck but in this case it's a small-medium error size.
Used when you fuck up something, BUT It has repair.

Oh fuck means inevitable total destruction.