Hi Lostsoul,
look up 50 cent on Google and you find that he named himself 50 cent as a metaphor for change...
Could it be that there´s something you want to change in your life? Or is maybe your inner child asking for attention?
The smoking is a bad habit...bad habit you want to change?
The baby starting to smoke...maybe you had to grow up to soon as a child?
The baby can also point to something new...a new project, idea or something like that...
Maybe you feel stuck (prison) somewhere inside yourself? Or emotion/heart is stuck inside...
Formula is the rational...like you use the rational (ego mind) to much...
Smoking can be used to not feel too much...
Just typed what came to my mind...