It is wrong not to share with your parents.
Lenny is chatting with his mom and eating chips when his mom asks him for a chip.
Lenny wants to answer his mom's request for a chip.
Lenny hands the bag of chips to his mother and tells her to take as many as she wants.
Lenny tells his mom that he's starving, so she should go to the kitchen and get her own snack.
Lenny's mom takes one chip and give the bag back to Lenny thanking him for the snack.
Lenny's mom is annoyed he won't share with her out of principle regardless of whether he's starving as he claims.