1. Someone who is far beyond the status of novice drug dealer (or any occupation). Not necessarily old but experienced at what they do. Has seniority.
2. A phrase used draw someone’s attention when they are being irritating to the first person. Not usually used as an insult.
1. “Dude, I’ve been selling drugs to teenagers since I was five... I’m a Crackadactal!”
2. “Hay, stop being a Crackadactal and let’s get back to work.”