Is this really necessary? how boring.

Your mother had invited one of her friends, but that friend had a son the same age as you and clearly your mother wanted you to get along with that boy (Although she knew you weren't good at getting along with the rest). You had agreed to make some sandwiches for those guests.

As soon as you heard the bell and the sound of the door opening along with the voices, you decided it was better to play dumb and take longer than it should until your mother yelled at you asking you to go and greet.