I do not own the Avengers' films - I haven't even seen them!
This is the Avengers' version of Engineering geekout. I will take this out of the lab plenty as well - you'll see!
TapTap
Tony Stark groaned and rubbed his temple. Dumm-E had just dropped something onto his head. Something far too heavy for it to be comfortable. "Communal college, that's where you'll end up," Ironman threatened while he went off in the hunt for a clean rag to wipe off the blood from an admittedly small wound to keep it from running into his eyes. Head wounds always bled like crazy.
Half an hour later he sat by the kitchen table in the communal kitchen of the Avengers' Tower, trying to avoid listening to Pepper berate him/fuss and wincing as Bruce swiped something over his skin which stung.
"Can you not try to be at least a little careful, Tony?" Pepper continued to tell him off, even though it hadn't been in the least his fault. Bruce was ignoring her much more effectively than Tony managed, what with his throbbing head, as he took care of the wound, finally telling Pepper in his mild-mannered way that he needed silence to determine if Tony had a concussion. Which, as it turned out, he had.
Luckily, as Tony tried to get up - way too fast - Steve was there to catch him, conveniently just having entered the kitchen. Naturally, Captain America then insisted to carry a grumbling Ironman up to the penthouse to keep him from falling again. It went without saying that Tony kept whining and insincerely flirting inappropriately the entire way.
All in all, a completely normal day in the Tower.