Which informal logical fallacy is committed in the following statement?

'If you give him an inch, he will take a mile.'

The fallacy is a defect in an argument that arise a mistake in reasoning. 

Key Points

• Fallacies are of two types formal and informal. 
• Informal fallacies are inappropriate arguments in natural language. 
• There are different types of Informal fallacies such as the fallacy of equivocation, the fallacy of amphiboly, the fallacy of composition and division, the ad hominem fallacy, the Slippery slope, and the appeal to ignorance. 
• A slippery slope argument follows a first premise through a series of implications until it leads to an unsatisfactory, undesired, or disastrous conclusion.
• For example,
  • If you give him an inch, he will take a mile. 
  • More drug abuse inevitably leads to more crime, crime leads to violence, and violence leads to revolution. 

Thus, the Slippery slope informal logical fallacy is committed. 

Additional Information

• Appeal to force is a fallacy that occurs when one uses force to convince someone to accept a conclusion.
• Appeal to authority is a type of argument in which the viewpoint of an authority on a subject is used as evidence to support an argument.
• Hasty generalization is a fallacy that occurs when a small sample is generalised which means that a particular instance is a universal truth.