Someone who has characteristics of a slacker and the awareness of British Petroleum during an oil spill.
Slack(er) and lackadaisical combined. Usually this person gives off their manner by giving commands with no real effect.
J: Alright, I'll fix it in a minute.
C: Damnit J!!! Quit being so damn slackadaisical and do something for once!
2. K: Alright, finals are coming up. I'm pretty hungover... so, ummm.... do whatever.
C: You're pretty slackadaisical today, K.
3. L: If I ran her department, I'd be a friggin' terrorist!
C: Yeah we never get anything accomplished because she's so slackadaisical.
C: If the entire store were to catch fire, she'd take the longest because she doesn't give a damn.
L: I see. She never organizes her paperwork until it's too late. She's so Slackadaisical!
C: Now you get it!