Any guy or girl that you fuck with on the side while in a relationship, anyone other than your significant other. Side sauce commonly does not know you are in a relationship or thinks that you are in a relationship with them.
Heather: "Who's the linebacker with the pretty mouth, is that your boy?"
A golf term coined by renowned golfer Phil Mickelson. Side sauce is that special oomph added to a shot to ensure that it will go in. Usually used in a playful, cocky manner. Can also be used in a general manner to describe a shot made with a lot of finesse and precision that will definitely go in.
Alternatively and originally used as a verb.
"Gonna add a little side sauce to this chip shot. Baby's going right in."
"Pins on the left, and there's a ridge from the right, so the ball will feed to it. So I'm going to side sauce one in there from the right." -Phil Mickelson on his golf game
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'