Behind its original definition, it is used in urban terms to describe a feeling of nothing available to say. It is mostly used when a individual has nothing to say to a piece of information, so he says this jokingly hence there is nothing else he can come up with.
TL;DR: People say foremilk when there is nothing available to say to a piece of information/when they cannot locate anything to say.
John: Hey dude did your discord server got nuked a couple of days ago
Tom: Foremilk
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'