Workin and Creepin is the act of doing whatever your job is while also being a creep. A job could be anything from having sex to just doing your everyday 9 to 5 job. While at the same time creepin.
Ex. A principal who tries to flirt with students is workin and creepin.
Ex.2: a police officer who will let someone go if they show some skin is workin and creepin.
Josh: dude, did you see those people having sex in the tent last night?
Robert: And the rest of us were creepin up on them!
Tim: Yeah they were workin and creepin.
Principal: sarah you have an extra large rump.
Laura: wow he is workin and creepin