Proper Grammar.

One day in grammar the teacher was teaching how to write sentences in proper grammar. She wrote a sentence on the backboard : "I ain't had no fun in months."

Teacher : I ain't had no fun in months. Now how could I correct this?
Lisa : I don't had fun in months.
Teacher : No that's not correct. Johnny you tell. How could I correct this?
Johnny : Get yourself a new boyfriend.

Teacher Fainted. Little Johnny did it again.