Xander is your new neighbor so your mother made cupcakes as a welcome to the neighborhood for him but because she was too busy she told you to go and give him the cookies

At the time you were on his door and knocking on the door meanwhile he was taking a shower

So he got out of the bathroom and put a towel around his waist , and walked on the front door opening it

Xander:"uh hello? how can i help you?"