Messing around, especially when it comes to a job or important activity. Could also be a reference to beating a dead horse when it comes to getting a machine or important piece of equipment to work.
Steve said that Dave was jimmy jacking around so he got yelled at. Because Dave's a lazy fat nerd and nobody likes him.
Look I'm not going to jimmy jack around with that head gasket, just get an expensive mechanic to do it!
Cigarette: Northern slang for a cigarette, used oft by mashed up mancunian ravers becasue of the resemblance of a hot(electric)stove to the end of a lit cigarette. Originated circa 1991 in the early halcyon days of the rave culture; we speculate during a drug fuelled hallucination by said manc.
'fuck me noel, i am bolloxed, is that a ciggy in your mouth, or the stove from me 'nans kitchen'/
General use: 'Give us a stove you cunt'