"Tony! What the hell are you doing?" asked Bruce as he walked into their shared lab space. It looked like Tony was setting up a complex pully structure out of scrap metal and twine.

"Making a Rube-Goldberg Machine." Said Tony not taking his eyes off his work.

"Why?"

"Why not. DUM-E pass me that wrench."

"Aren't you supposed to be working on that project for Pepper and that's why you left Carter with Steve for the afternoon."

"Carter can spend time with his Papa without needed a reason. And that projects not due for another week. I needed a break from all the crazy, so, I thought I'd make my own crazy."

"Remind me why I share a lab space with you?"

"You love me Brucey-bear. So… you want in?"

"What the hell." Huffed Bruce. "Where do you want me?"

So, Bruce and Tony proceeded to spend the next 3 hours setting up the most ridiculously complicated Rube-Goldberg machine they could muster. It covered most of the lab floor to ceiling. There where pullies, leavers, inclines, gears, a just about anything else you could think of. It was a work of art. A masterpiece. A work of science fiction. It looked wonderful.

"Should we get Clint down here to film this?" asked Tony as he set the last domino in place. Bruce nodded, and they used JARVIS to call a very confused Clint down to the shared lab to film their monstrosity. Tony shoved a camera into Clint's hands and instructed him to film their crazy "little" contraption.

"You guy's ready?" asked Clint from his perch by the window. Tony and Bruce gave an enthusiastic thumbs up as Clint turned the camera on.

"Tony Stark." Tony pointed to himself. "Bruce Banner." He pointed at Bruce. "Overly complicated Rube-Goldberg machine just to open the drawer where we keep the socket wrenches. GO!"

And with that Bruce knocked over the first domino in the set of 1000. They cascaded down around the lab with a noisy elegance. The last one fell and hit a ball that rolled down a track just to hit another one. That one landed on a pully that pulled it to the roof of the lab. Gears turned and ticked, and more balls rolled around the lab knocking over books, sheets of metal, and random tools they decided to use. It was a cacophony of madness.

Unfortunately, things went wrong from there. You see, the trajectory Bruce and Tony had calculated for one of the smaller balls was just a little bit off. So, instead of the ball landing on the track like it was supposed too it landed on the switch for one of Tony's hand torched. That particular torch was right next to a 0.3L tank of fuel. You can probably guess what happened next.

The resulting explosion was small by Tony's standards, but it was enough to destroy the rest of their machine in a spectacular fashion. When the duct cleared Bruce was blinking like an idiot, Clint was clutching the camera for dear life, and Tony was laughing like a true mad scientist. The resulting video was number 1 on YouTube for a week and the world continued to question the sanity of The Avengers.