You awaken the next morning to find yourself entangled with Brian, who must have returned to his room during the night. The two of you are hugging each other, as if you were each other's teddy bears. That makes you grin until you realize a couple of things: First of all, you are the same size as your little brother, there is a strong smell of urine in the air, and your underpants feel damp.
Scrambling up, you stand on the bed and stare into the dresser mirror. Your 10-year-old brother is staring back at you. Then the mattress shifts as Brian stands up next to you at looks at the mirror curiously. With him beside you, it is obvious you are absolutely identical. A quick twist around confirms your tail is gone. He rubs his eyes and says "Whatcha looking at?"
You turn to look at him in amazement. "I still look like you!"
Brian gives you a funny look. "Well, duh! Twins? And you wet the bed last night, not me! So you have to change the sheets!"
You start to protest, then see that while your briefs are obviously stained and damp, his are not. Then you notice some other things. Like pictures that show your family on the dresser - with twin boys and no older daughter! Brian gets down and goes over to the dresser. "What do you want to wear today?"
You get down and stare around the room. There are two small desks and two computers, a lot more shoes, two skateboards. As you try to take all this in, the door swings open and your mother looks in. "Get the sheets pulled so I can wash them."
Brian points at you and says "Benny did it this time!"
Your mom shakes her head. "I don't care who peed. Benjamin, put the sheets on the washer, and throw those underpants in with them. Both of you get dressed now." She shuts the door.
Brian picks out a red T-shirt and khaki shorts. "How about these?" When you don't answer, he pulls out matching set and tosses them at you. "Come on! We gotta get showered. He strips off his briefs and goes into the bathroom. You hear the water turned on, and then his shout. "Come on!"
Going into the bathroom, you see him standing in the shower already, holding bar of soap. He gestures for you to get in. This seems oddly familiar to you, and you slip off your damp underwear and step under the warm water. He starts soaping your back and chest, and then hands you the soap to do him. By the time you finish with the shower, the two of you have touched every part of each other's bodies, but there was nothing sensual or erotic about it. It was nice - as the two of you dry each other off, you have a hard time even remembering why this mutual attention is odd. You aren't really twins! You are his teenage sister! But after you get dressed in matching outfits and join your Mom for breakfast, it seems that the rest of the world has adjusted to your being Benjamin, Brian's identical twin brother!