Usually referring to someone whose actions have ulterior motives, generally sexual; someone who's skeemin/schemin' on someone else. Can also be used in a general sense for anyone who seems sketchy or deceptive, and probably clumsy at it. Probably a combination of skeemin and lunchbox.

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.