When I was but a little colt, I just wanted to play...
And play little colt Cheese Sandwich did, his playmate being his curious and hyperactive brother, Tomato Sandwich. Long before his years as a super duper party pony, Cheese took on the role of being a super duper big brother, making sure that little Tommy was safe, happy, and most importantly, loved.
Though he enjoyed spending time with him, his brotherly duties were taxing, especially since he was just a child. Between making sure that Tommy doesn't kill himself in recklessness, having to deal with some of his annoying episodes, making sure he didn't break any of Mom's knickknacks, and keeping his lonely and bully-ridden school life a secret so that Tommy didn't worry, Cheese could get rather exhausted.
Still, there was no way he'd trade his baby bro and their playtimes for the world.