"We want to be conjoined siblings like you guys!" Leo exclaimed. "Right, bros?"
"Of course!" Donnie replied. "We are quadruplets, and it should bring us 'closer together'."
"Sounds good to me," Raph said.
"Yeah!" Mikey exclaimed.
Luke then asked them if they wanted to be fused along with the clothes they were wearing. All four were wearing jeans, and each of their T-shirts were just a solid color, each wearing a different one. They decided to have their clothes fuse as well, so Luke had the four line up as they were. Then, Luke placed his hands on the two brothers at the ends, and pulled them together with the other two while using his powers to fuse them. When Luke was finished, he stepped back towards Brian and Nick, and all three saw what their four friends had become.
A wide torso rested on two wide legs and feet, and two regular arms extended from the wide shoulders. On top of the shoulders were the brothers' four identical heads--from their right-hand side to left, they were the heads of Leo, Donnie, Raph, and Mikey. Their pairs of jeans had combined into one pair with a much larger waist (due to the larger torso), and their white socks and black shoes as well for their larger feet. Their shared shirt was basically their original shirts fused together, and each color from their original shirts had become a vertical stripe covering each bro's section of their shared body--Leo's blue shirt, Donnie's purple shirt, Raph's red shirt, and Mikey's orange shirt. The short sleeves were part of Leo and Mikey's sections of the shirt, but the arms and legs could be controlled by all four bros. The new body bros stood in front of a mirror, striking a series of poses with their new shared body.
Mikey felt it necessary to comment on their new appearance with the catchphrase of a TV character with whom he shared a personality and name:
"Booyakasha!"