Reminds me of the experience of Smitty, an old guy I used to work with. Smitty smoked for, like, fifty years. I think he came out of the womb with a cigarette in his mouth! Anyway, one day he comes in to work kind of sad, and I asked what the problem was.
"The doctor told me I gotta quit smoking," he replied. "Gave me this here nicotine gum to chew."
So, Smitty takes out the gum, along with a pack of cigarettes, which he puts down on the table. He opens a stick of gum and puts it into his mouth. After half a minute of chewing, he says, "Well, this don't do SHIT." He spits out the gum, and grabs his smokes.