"What have you done," Bruce said, it wasn't a question; it was rarely a questions these days. Taking his glasses off, he rubbed the bridge of his nose. He could feel the start of a headache begin right there. And it had a name.

Tony Stark.

"I didn't do anything," Tony stressed, pointing to his chest. "I was minding my own business when he started to mess with my toys." He ran a grease covered hand through his dark hair. Bruce made a mental note to have Tony take a shower before he came to bed (if he came to bed) later that night. He was not going to have the bedding covered in grease, again, especially if it was not going to be in a good way.

A giggle from the ground drew their attention to a toddler wearing a shirt more than several sizes too big for him.

"We're going to have to find him some different clothes," Bruce sighed and put his glasses in his shirt pocket.

Tony shook his head and moved in front of him, blocking his view. "Oh, no. No. No. No. I know that look." He pointed at Bruce in the face. "That's your sympathy look. That's the look you got when you dragged me on that trip to that third world country last year."

He gave him a leveled look. "That was a clinic in Brooklyn."

"Doesn't matter, you looked like you wanted to adopt every kid that crossed your path. You are not getting attached to him," Tony waved at the little boy behind him. "We'll change him back." Tony spun around and went to a worktable. "Once he's changed back you can wipe that look off your face."

Bruce ignored Tony and picked up the little boy. He had a head of floppy brown hair and large smiling brown eyes. The scientist had to admit that Peter Parker made an adorable kid.

Tony was busy chatting with JARVIS, trying to determine what Peter had done, exactly, to de-age himself.

"Foo'. Eat," Peter babbled.

"Even as a brat he's a bottomless pit," Tony grumbled as he looked at a screen with rapidly scrolling data.

Rolling his eyes, Bruce adjusted Peter on his hip. Peter put his fist in his mouth and started to drool all over it in a clear attempt to eat it. "I am going to get him something to eat, Tony."

"Yeah, all right," he replied and then looked up. "Wait, put the kid down. You're going to get attached to him – I don't know how many times I have to say that – if I can't get him back to normal by the end of the day."

"I am taking care of him, Tony. He needs to eat." He paused and lifted Peter's shirt up briefly. "We're also going to need to find diapers for him."

"See! Attachment! Put him down, Banner," Tony insisted. "JARVIS tell Bruce to put the little horror down."

"Dr. Banner, Mr. Stark is requesting that you place the child down. Also, I have arranged for a variety of diapers and other necessities that the young Mr. Parker may require. In the meantime there is some Jell-O pudding and crackers in the pantry that may be suitable for the child. "

Bruce smirked at Tony. "Thank you JARVIS."

Tony glared at Bruce's retreating form. Once the man was gone he turned back to the screen he had been at. "That was my pudding."

"I know, Mr. Stark."

Author's Notes: I am not a big fan of Superhusbands, or Superfamily (MCU wise). However I do like Science Bros/Science Boyfriends. And the other night as I was falling asleep I thought up this little drabble.

Also, this won't be regularly updated as I probably only write this when I get writer's block for other things I'm writing. As always, reviews are always welcome!