1x18 - Something Wicked
Seeing young Sam and Dean was a big fan-girl moment for me because I just love their flashbacks. This scene was the one of the best flashbacks and it just makes me smile and go “aslkf awhh asdf” inside. I honestly think Dean is one of the best older brothers someone could ever ask for. Even at a young age like that, he was already sacrificing what he liked so Sam could be happy. Sam, in return, remembers to thank his brother by offering him to have the toy in the cereal box.