A boy was walking down the street when he was stopped by a man holding a sofa

A boy was walking down the street when he was stopped by a man holding a sofa.The 

man said to the boy “Here you go you can have this sofa for nothing I don’t need it anymore” 

the boy thanked him and took the sofa home to his dad.When he arrived home his dad went 

mad, the boy said to him “Dad I thought you would be pleased”  his dad replied “No son what 

have I told you about taking suites off strangers”