A/N: Looks like I've officially been suckered into a new fandom (at least as far as writing goes). Thanks a million to everyone who read/reviewed/favorited my first story for this movie, Checking In. The readers for this fandom are AMAZING.

This fic was inspired by the artwork of ranixin over in Tumblr. You can find the artwork here: www. ranixin. tumblr. com/post /22540 035440/ science-bros- shenanigans (If the link doesn't work, message me and I'll see if I can fix it)!

May or may not add more chapters with these two and their science-buddy-BFFishness later so I'll leave this as a in-progress for now. Either way, hope you guys enjoy!

"Are you sure this is safe?"

"Not really."

Bruce Banner looked up from the machine and gave Pepper a small, reassuring smile. "Don't worry, it should be fine. All the numbers add up and everything is- wait, hey! Tony, what are you-?"

Tony didn't look up as he fidgeted with the machine, his words coming in broken fragments as he struggled with some internal part that Bruce couldn't see. "I'm rerouting - the - secondary circuit so that - the power will - ah! There we go."

Bruce frowned. "Tony, I don't think that's a good idea. We didn't do any checks or run any scenarios for an increase in the power."

"Ah, don't worry about it. It'll be fine," Tony said confidently. "Here, hold it steady for me so I can connect the core."

Bruce sighed but did as he was asked. Pepper shook her head and slowly backed away. "I'm getting out of here before you two cause some sort of disaster. Make sure you clean up after playtime, Tony," she called sternly as she stepped into the elevator.

"Yes, mom," Tony called back distractedly, his attention focused on the mid-sized technological box of wonders before him.

"I'll make sure he cleans up, Pepper," Bruce said.

"Thank you, Bruce," Pepper replied, smiling with fond exasperation at the both of them as the elevator doors slid closed.

"Yes, thank you, Bruce," Tony grunted with playful sarcasm, elbow deep in the machine as he fished around for what he needed.

"Shut up," the other man replied. He watched Tony root around inside the machine and frowned.

"Tony, are you sure this will work?" Bruce asked, obviously skeptical as he watched Tony work.

"Positive," the playboy replied. "Just keep it steady. Almost - got it - there!"

As Tony finished a light whirring sound started up, high pitched almost to the point of being painful. "There we go," he said, stepping back and rubbing his hands together in childish anticipation.

The high pitched sound continued and slowly the mid-sized technological box of wonders began to light up. Tony whooped like a teenage boy and Bruce grinned in satisfaction.

"See?" Tony said, winking at Bruce with a smug smile. "I told you it would-"

An unexpected flash and bang cut him off mid-sentence and sent both men flying as the box of wonders proceeding to explode in a shower of multicolored sparks and debris.

A moment later the elevator dinged and Pepper rushed out, squeaking in horror at the blackened mess that was a majority of the floor before her. "Oh my God. Tony! Bruce? Are you two alright?"

From opposite ends of the floor both men sat up, each as covered in grime and black dust from the explosion as the rest of the suite was.

"I'm fine," Tony gasped, standing up shaking and dusting himself off. "Bruce?"

"Yeah, I'm alright," Banner answered as he too rose and wiped away some of the sooty black dust from his clothing and face.

Both men walked to the center of the floor and looked around at the mess, coughing and waving away the still-rising smoke that curled upwards from the shattered remains of their failed gadget.

"Well, that went well," Tony commented airily. Bruce hummed in reply and looked around thoughtfully.

"Wanna try again?"

The doctor looked up and Tony grinned at him. After a moment of silence Bruce smiled and shrugged in return. "Sure, why not?"

"Great. Only this time let's not amp up the power core."

"I told you it was a bad idea," Bruce reminded as Tony ordered his bots to start the clean up. Once that was done the two headed down to the secondary lab to start over.

Pepper could only watch them go and pray that they would somehow make it through the day without blowing up the tower.

Thanks for reading! Reviews are love!