Natasha knew it was gonna be a long day when Tony came out and asked who'd messed with his desktop picture. Apparently, someone had replaced his Iron Man specs (more like a blueprint without any markings; just a sketched out drawing, but she still thought it a security risk) with a kitten wearing a tutu.

It got a chuckle out of Clint, which made him an immediate suspect, but Clint assured Tony it hadn't been him (and it took a half an hour to convince Stark he was telling the truth).

The next prank was the classic "Water Bucket Over The Door" one. Apparently, Steve didn't know it was there, and Bucky was amused if sopping wet. Which led to a mini-war of them filling up cups of water and splashing each other until Jan came in and (lightly) scolded them for making such a mess of her kitchen.

The pranks continued throughout the day, the prankster clearly fishing for someone to start a war with. Natasha was amused but unmoved as the pranks hit people around her.

Until she went to her room and saw it covered in tinfoil.

Okay, now it was on.

She pulled out her pranking kit and scanned through it, selecting silly string and tucking in her pocket before setting out in search of the prankster. Or pranksters. She hadn't seen too much of the Maximoff twins all day. Except when Wanda was hit with a bucket of water and Pietro got a face full of shaving cream form a rather ingenious door-prank setup.

They hadn't even been mad. In fact...their reactions had seemed...practiced.

She smirked as she packed a second can and skunk off to their room, accidentally catching the two in the middle of setting up another prank, that one for Vision.

Natasha would later report that she'd momentarily lost her mind.

She pulled out the silly string and went crazy, spraying the two of them and anything else in the vicinity. Wanda retaliated almost immediately with a can of spray paint - responsibly aimed anywhere but Nat's head - and Pietro grabbed his own can of silly string and attacked Natasha.

Natasha was forced to flee as the twins chased her down the hall, right into the waiting trap of Clint Barton. Natasha got soaked, but kept going until she realized what she'd been soaked with.

Glitter water.

"Barton!" she shouted, honestly a little mad. But then Wanda sprayed her and ran, dragging her brother with her, and Natasha decided that Clint would get his during the impending and by now inevitable prank war.

The Maximoffs would get their wish...and everything that went with it.