1. Adjective. When ones blood alcohol content (BAC) is TWICE the legal limit.
2. Verb. The act of getting twiceskied, or twiceskiing.
Person 1: I was so drunk last night.
Person 2: How drunk were you?
Person 1: I was twiceskies.
Police Officer: Mam you blew a .16 on the breathalizer.
Caitlin: Oh I'm twiceskies.