My DP has two children, and the oldest is 20 years old and lives with us. He is a likeable lad, quite immature but he holds down a good apprentice job and has a steady girlfriend. The only problem I have is that he is so so rude to his father. He is demanding, lazy, and very selfish. He will yell at his dad for the smallest thing and nearly always gets his own way. Am I being unfair in really disliking this behaviour or is it usual for a 20 year old Lad.??? He clearly loves his dad and they are close, but he can be so rude and selfish, and although he grudgingly pays £40 per week rent, he completely refuses to help in any way around the house.