Originating in Minnesota, it is when a male jacks off into a mitten and puts the mitten outside so it can freeze overnight. This is in preparation for having a mate over the next night. The cum-filled mitten should be frozen by the time your mate comes over, and it is then used to spank your mate.

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.