The act of drinking/partaking in the use of mind altering substances to the state of inebriation where the person will usually have an extremely large ego resulting in other people labelling them a fuckwit. Said substance abuser is more often than not proud of this achievement.
Can also be used as a salute before having a drink in the presence of a group.
1. Tom: What are you doing tonight?
Bill: I'm going to be getting my fuckwit on.
2. Jannette: I'm so tanked right now.
Sarah: Get your fuckwit on!