He is only a year older than you are yourself, but now that you have spend so much time in young Thomas that possessing your older brother would be a great experience. You smirk and think about how you would make your brother's body your own.
You open the door of Thomas' room and quietly walk down the stairs. Your brother Daniel has his room in the basement which means down there you can make any sound you want without the rest of the house hearing you. You open the door to the basement and walk down the cracking stairs. "Pssst. Daniel?" You whisper, but there is no answer. "Perfect" you think and guide Thomas over to where his big brother's bed is standing. There he lays. "Damn" you say when you spot your brother laying naked in his bed on his belly. He has no blanket covering him which allows you to see his muscled body in all it glory. "Heh heh" you smirk as you walk over to the bed. "Now, how shall I possess you?" You think.
You study your brother's body a little and come up with an idea. "Thomas, today is your lucky day" you say as you take off your pajama pants. You start stroking your little brother's cock until you are about to climax. Then you quickly hop on top of Daniel on his bed and stick your borrowed dick in Daniel's ass with all it's 6 inches. You climax far in Daniel's ass as he jumps up. "Hey! What the fuck are you doing?" "Ahhhh" Daniel screams at you. "You'll see soon enough" you reply as Thomas and you black out. As Thomas falls back unconscious Daniel is able to stand up and take a few steps back from his little brother. "Ahhhh!" Daniel moans as he suddenly collapses. He falls on the floor and starts spasming. By this time your green slime has reached Daniel's brain through Thomas' cumshot.
"Ughhh" you gasp as you gain control of your big brother. "Ungggg, yea" you moan in your new voice, being stunned by the sudden pleasure releasing from your new ass. You stand up and walk over to your unconscious little brother. "Thank you Thommy." "You've been of great help" you say smirking at his naked body. You grab you new meat and start pumping it good. "Arghhhh" you moan as your 7 inch member gets fully erect. "C'mon big brother." You make Daniel say. "Show me what you've got." And you start pumping his dick harder.
You can feel Daniel's cum flowing up your cock and decide to make good use of the moment.