A man tells his friend, "I went to my doctor to see if he could help me give up smoking."
"What did he say?"
"He suggested that every time I felt like a smoke I should reach for a bar of chocolate."
"Did that do any good?"
"No I can't get the damn chocolate to light."
Three men were on a boat. All together, they had four cigarettes; However, no one brought any matches.
They threw one cigarette overboard, which caused the whole boat to become a cigarette lighter.